When someone experiences a heart attack, cells in their heart die. Scientists have found two ways to replace the lost cells in rodents. The techniques may one day work in us.
Learn why some birds fly south for the winter while others do not migrate, plus find out how they navigate such long distances and where they go.
Intraocular pressure is defined as the pressure inside the eye. It was what gives our eye their shape and keeps vital structures in the eye in place. But there are other things about the pressure in the eye that can actually cause problems.
When asked why the sky is blue, most people are able to come up with a vague statement about some gas called ozone being blue. The real answer, however, is much more interesting.
The Columbian ground squirrel is an interesting animal that is very entertaining to watch. A large population can be found in Manning Park, British Columbia.
Many people struggle to tell these two reptiles apart, but it isn't that difficult when you know what to look for. What is the difference between alligators and crocodiles? Well, there are essentially 5 main ways to tell them apart...
The rainbow eucalyptus is an unusual tree with a beautiful, multicoloured trunk. The trunk's colours change as the tree sheds strips of bark, creating living art.
Lichens are interesting organisms that are important in their environment and useful for humans. Some produce chemicals that are potentially dangerous for us, however.
Learn some facts about common songbirds of Pennsylvania and view pictures to help you identify and attract the birds in your backyard.
Science has proven that redheads are physically unique among all other people. Find out why, historically, some people thought they were evil, while others thought they held magical powers.
Rapamycin increases lifespan in mice by inhibiting a protein called mTOR. It may do the same in dogs and possibly in humans. It's currently being tested in pet dogs.
Broca's area, Wernicke's area, and the circle of Willis are important parts of the brain. They are named after the famous scientists who discovered them.
Bumble bees have surprisingly capable brains. They can play a simple version of soccer and pull a string to get a reward. They may even experience optimism.
The first of four basic guides to the night sky, and what can be seen with the naked eye or binoculars. This page identifies the many kinds of objects you can see when you look up at the night sky
A microscope is a gateway to a fascinating and normally invisible world. A home microscope is entertaining and educational for children and for adults, too.
Moray eels and wolf eels have elongated bodies and live on the ocean bottom. They have each developed some very interesting and unusual body features and behaviours.
The monkey puzzle tree is a very strange and interesting plant. It's native to South America but grows in parks and gardens in other areas as an introduced plant.
Asian and African golden cats are beautiful animals whose populations are near threatened. The cats are in trouble because of human activity in their habitat.
Many slugs play a helpful role in their environment, although some are pests. Researchers are hoping to create useful items based on slug slime and movement.
Goldfish are interesting fish that have some surprising features. The animals are popular pets. They are found in the wild, where they may become very large.
Parasitic plants obtain their food or nutrients from another plant. The relationship may last for a long time, but sometimes the parasite kills its host.
Saliva is made by salivary glands and has important functions. The glands may sometimes develop stones. In Sjogren's syndrome, insufficient saliva is made.
Different Types of Stars in the Universe - Physical characteristics and images of the many different kinds of stars, from red giants to white dwarfs.
Parasites are everywhere. They live on your skin, in your hair and even inside you! Some are harmless, many are necessary for health, and a few are DEADLY. Let's find out more about crazy PARASITES...
Some people believe that NDE is proof of an afterlife. However, science provides alternate, and more plausible, explanations.
Don't let mind readers and magicians mess with your mind with number tricks. Learn their secrets and beat them at their own game.
Honey bees are complex and fascinating creatures. Here are 20 questions--with answers-- to help you understand honey bees and their place in our world.
Learn interesting facts about the behavior of the blue jay, view pictures, and learn how to keep this bully away from your bird feeder.
We should be less concerned with being for or against wolves and more concerned with how humans and wolves can better coexist.
Pleistocene rewilding aims to reclaim the natural world and restore it to how humans found it over 10,000 years ago. Is this a good idea?
Some scientists are trying to bring extinct animals back to life through a process called cloning. The idea is exciting but also controversial.
The frilled shark is a strange, deep water shark with a wide head, a huge mouth, and a long, eel-like body. It’s caught as bycatch and is near threatened.
Bone marrow is an essential tissue. It contains stem cells that produce all of our blood cells. Bone marrow transplants are used to treat some serious diseases.
The human skeleton has vital functions. It provides support and protection, allows us to move, makes blood cells, and stores fatty acids and minerals.
Honey bees are very smart despite having tiny brains. They can learn; they have good memories, and they can communicate using a unique symbolic language.
This is about the endurance of humans during intergalactic travel, based on my studies of human survival.
The Ethiopian wolf lives in Africa at high elevations. It's the most endangered member of the dog family, or the Canidae. The animal faces some serious threats.
Lobsters are interesting animals to observe and study in a natural setting. They are popular food items, but the way in which we kill them is controversial.
The deadly nightshade plant, or belladonna, is extremely poisonous. It contains atropine, which is potentially dangerous but has important medical uses.
Inky cap mushrooms become a black, inky liquid in order to disperse their spores. Some contain coprine, which increases the unpleasant effects of alcohol intake.
Neil deGrasse Tyson is an astrophysicist who does scholarly research but also can explain cosmology to the average person. I provide a bio and include some quotes that reveal the inner man.
Proteins in the body have essential jobs. They enable us to move, transport materials and signals, control chemical reactions, stop bleeding, and fight infections.
Puffins are most people’s favourite sea bird, and Scotland has plenty of great places to view them. Whether you are a visitor or native to Scotland, this article shows you where to go. And it’s filled with cute photos!
Destruction of our environment is the biggest contribution that we make to the extinction of many species in the forest. It is estimated that approximately half the number of world’s animals live in the rain forests. Due to the rapid disappearance of rain forests many animals living in them are now endangered. Every plant and animal needs an ideal environment where they can survive. No life can exist without proper and sufficient source of food, water and shelter. There should be a balance betwe
The queen bee is the mother of the honey bee hive. The life cycle of the queen bee and her affect upon the hive is fascinating. These FAQ will explain all.
Wolbachia is a bacterium that infects mosquitoes. It prevents viral replication in its host and may protect us from dengue, Zika virus disease, and other illnesses.
Osteoblasts and osteoclasts control the production and disintegration of bone and the amount of calcium released from the bones into the bloodstream.
The Mariana Trench is the deepest place in the ocean and contains some fascinating animals. NOAA has made some exciting discoveries about life in the trench.
The lion is a multi-cultural symbol of power and strength. But how much do we really know about them? Among the things we know well about them, is their hunting ability. This Hub explores the hunting behaviour of the lion in-depth...
The anatomy of the European Honey Bee (Apis Mellifera) is truly amazing, from its hairy eyes to its clawed feet to its barbed stinger. Powerful jaws, two stomachs, 24 "knees," and more.
Narwhals are strange and fascinating Arctic whales. The males—and sometimes the females—have a very long tooth that grows through their lip, forming a tusk.
Sardines and herring are nutritious foods. The behaviour of the living fish is interesting to study, however. They live in groups and communicate with their companions.
The wonderpus octopus is a beautiful animal found around Indonesia and Malaysia. It resembles a mimic octopus, which has an amazing ability to mimic other animals.
Students have an excellent chance of doing well on a physics exam if they work efficiently throughout the physics course and follow some tips for writing exams.
Do you ever wonder how Magic Squares are created? Well, stop worrying. I'll show you how to construct them using just a few easy to follow rules.
The difference between the colossal and giant squid, the real sea monsters that spawned the kraken legend, is about more than just size!
Researchers have found evidence linking the insulin resistance that develops in type 2 diabetes with an increased risk of Alzheimer's disease. The details need to be clarified, however.
The Surinam toad has a strange, flattened body. During reproduction, the female’s skin absorbs the fertilized eggs and the young toads develop under her skin.
Mucus has vital functions, such as trapping germs in air passages and protecting the stomach lining from an acid attack. Excess mucus can cause health problems.
Sickle cell disease is painful for sufferers and can sometimes be dangerous. Genome editing may one day correct the mutation that causes the disorder.
The mucus that covers fish has several functions, including protection from multiple dangers and serving as food for young fish. The substance may also be useful for us.
Scientists have their own way to talk about black holes. Want to expand your ability to do just that? Read on to find out how...
Fishing cats are wild animals that feed primarily on fish and are at ease in water. Unfortunately, their population is in trouble due to habitat destruction.
Cosmological mysteries are numerous, incredible in size, and the possible explanations for them are just as bountiful. Let's explore the supervoid, one of those mysteries, and see what it could be...
The bunya pine produces huge and often very heavy cones. Its large seeds are both edible and tasty. The tree has a strange appearance and some unusual features.
Top predators, such as sharks, are vital to the health of all ecosystems, but they are being hunted and killed close to extinction.
This is only theory and not based on applied physics. I discuss this for the sake of expanding scientific thought on the subject of time.
A mycorrhiza is a beneficial association between a fungus and plant roots. Mycorrhizal fungi often form a communication network between trees. Some produce truffles.
Bleach has potent antimicrobial properties and is also able to remove stains from fabrics. It has many uses, but it's potentially dangerous.
Antibiotic resistance in bacteria that cause disease is a serious problem. Soil contains many bacteria, some of which may help us by making new antibiotics.
At least 1000 types of fish—and probably many more—produce sounds. These sounds include pops, clicks, purrs, grunts, hums, hoots, rattles, and tinkles.
Adrenaline or epinephrine is a hormone made by the adrenal gland. It plays an important role in the fight or flight response and in treating anaphylaxis.
The dragon blood tree of Socotra Island has an unusual appearance. It secretes a red resin known as dragon's blood when its bark is injured. The resin is used in many ways.
In winter, the Narcisse Snake Dens contain the world's largest concentration of red-sided garter snakes. The snakes are non-venomous and are sometimes kept as pets.
Spiders both fascinate and frighten people. Check out these weird, amazing, interesting and fun facts about spiders taken from science, history, literature and mythology with cool photos and videos.
Some of the most majestic endangered species are the big cats. There are many different cats that are endangered, including: ocelots, jaguars, bengal tigers, and sumatran tigers.
This is the fourth page of a series of guides to the night sky for beginners. Here, I look at the most prominent objects other than our Moon and the stars, which can be easily seen in the night sky.
This is a basic guide to what you can see on the surface on the Moon - there is as much that can be seen on the Moon with a pair of binoculars, than in the whole of the rest of the sky put together.
The hedge bindweed or morning glory twines around other plants and interferes with their growth. Bindweed produces large and beautiful flowers in summer.
Cinnabar is a beautiful but toxic red mineral made of mercury (ll) sulfide. It’s used as a source of mercury and to make an artist's pigment called vermilion.
Mechanics is a branch of physics which deals with forces, mass and motion with applications in engineering construction, the design of machines, ballistics and space travel.
Mud is a versatile and interesting material. It's useful for both humans and animals. It can also be dangerous, especially in the form of mud volcanoes and mudflows.
The safflower plant provides a useful vegetable and cosmetic oil and an attractive dye for textiles. A genetically engineered form of the plant can make insulin.
There are supposedly dozens if not hundreds of poisonous herbs that grow around the world. Doctors and pharmaceutical companies warn us about these herbs..yet some of these herbs are used in our meds.
Recently, scientists have become concerned about the celestial movements of asteroids and comets—so much so that they have set up several observatories around the planet to track these objects.
Just recently my family and I discovered a family of owls living in the oak tree in our backyard. We had seen the father owl perched upon a ladder in our neighbor's backyard the weekend prior to when my husband noticed the whole family hanging out on a branch the following weekend. We both were immediately fascinated by these wise, majestic creatures and so I've been inspired to write a hub about the different types of owls in Florida.
The triangle is the simplest polygon This article covers types of triangles, Pythagoras's theorem, cosine rule, sine rule, various ways of calculating the area of a triangle and basic trigonometry
This is the third page in a series of guides for anyone who wants to learn a little more about our night sky. This page looks at those most numerous of all objects visible in the night sky - the stars
Hydrochloric acid is made in the stomach and is a helpful chemical. However, too much or too little acid or acid in the wrong place can cause problems.
Tomatoes are nutritious fruits with an interesting history, but they often lack flavor. Methods to improve taste and a discovery by scientists may both be helpful.
The banana spider is famous for its beautiful web, which appears to be golden when it shines in the sun. The spider's venom is of the same type as that of a black widow, but much weaker.
Coral bleaching is an event in which corals lose their pigment and main source of food. It often causes corals to die. Oxybenzone in sunscreens may contribute to coral bleaching.
Glaucoma is a vision problem caused by damage to the optic nerve. The pressure in the eyeball is often increased, but the disease is not fully understood. Recent research may change this situation.
Hair color is primarily genetic, and red hair is caused by mutations in the MC1R gene. The gene for red hair also causes an increased sensitivity to sunlight and a reduced sensitivity to anesthesia. Contrary to internet rumors, redheads are not going extinct! Famous redheads include Queen Elizabeth I and Malcolm X.
Wild relatives of some major agricultural crops are in trouble. We need the genetic diversity in wild crops and the lower diversity present in cultivated ones to provide food security for the future.