Learn how bird feeders impact wild birds and the environment so you understand the good and bad aspects of feeding the birds in your garden or yard.
Asian and African golden cats are beautiful animals whose populations are near threatened or vulnerable. The cats are in trouble because of human activity in their habitat.
While it may ultimately prove to be wrong, scientists know of several ways to test for string theory using many conventions of physics.
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.
Antibiotic resistance in bacteria is becoming a very serious problem. Phage therapy—treatment with bacteriophages or viruses that attack bacteria—might be a solution.
Prior to the discovery of blood groups, blood transfusions were often deadly. Physicians attempted the use of milk and animal blood as an alternative to human blood, but met with limited success: the discovery of blood types allowed modern transfusions to safely take place. Blood typing, blood groups around the world, and the genetics of blood types are discussed in this article.
The American sweet gum (Liquidambar styraciflua) is an ornamental tree grown in BC. Its leaves are a gorgeous colour in autumn, but its spiky fruits may be a problem.
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.
The Viral Equation 8 ÷ 2(2 + 2) has only one answer and that is 1 not 16. PEMDAS and BODMAS are being incorrectly applied to this equation by the proponents of 16 as a result, probably due to calculators and spreadsheets applying incorrect rules and not being challenged many years ago.
Solving triangles using Pythagoras's theorem, the cosine rule, the sine rule and various ways of calculating the area of a triangle.
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.
Different Types of Stars in the Universe - Physical characteristics and images of the many different kinds of stars, from red giants to white dwarfs.
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.
Earwigs have a fearsome image but aren't dangerous. They sometimes become garden pests. Natural control methods can be very helpful in dealing with the insects.
Proteins in the body have essential jobs. They enable us to move, transport materials and signals, control chemical reactions, stop bleeding, and fight infections.
Millennia have vanished, taking species and ecosystems with it. Fossils restore the broken mosaic of prehistory, providing insights into how animals lived and died. Recent riddles included glass pearls inside clams, where butterflies got their legs from and a toe that continues to defy explanation.
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 8 main ways to tell them apart...
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.
Jackfruit trees produce huge fruits. Cacao seeds are used to make cocoa, but the trees are in trouble. Jackfruit seed powder may be a good substitute for cocoa.
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?
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.
A mid-air explosion brought down a United Airlines flight in what was probably the world’s first aeronautical terrorism case.
Learn some facts about common songbirds of Pennsylvania and view pictures to help you identify and attract the birds in your backyard.
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.
The northwestern crow is an intelligent and interesting bird. Canuck is a wild but semi-tame member of the species in Vancouver who voluntarily associates with humans.
The gharial is a critically-endangered relative of the crocodile. It lives in and next to rivers in India and Nepal. The animal has some unusual and interesting features.
Exciting disciplines that combine biology and math include biostatistics, epidemiology, bioinformatics, mathematical biology, and population ecology. The disciplines offer interesting careers.
Octopuses have fascinating abilities. Some have fins that help them move. Others demonstrate intelligence. The genome of one species is very unusual.
Spiders are fascinating animals that help us by removing harmful insects from the environment. Spider silk is very strong and is potentially useful for humans.
Sardines and herring are nutritious foods. The behaviour of the living fish is interesting to study. They live in groups and communicate with their companions.
The giant hogweed causes burns and blisters. Grapefruit juice interferes with many medicines. The chemicals that cause these effects are called furanocoumarins.
Here are the tales of fifteen species that succumbed to anthropogenic extinction as a result of hunting or habitat destruction.
Oregon grape is an attractive plant with edible berries. The plant contains berberine, which may have health benefits. Further research is needed to prove this.
Time is not a material thing. You can’t handle it and move it around as you can with any object at your disposal. It just slips away. So, is it an illusion?
Bacteria have some amazing abilities. They can live in extreme habitats, produce light or electricity, communicate with each other, and act as predators and magnets.
The Tasmanian devil is an endangered animal whose population is decreasing. The main reason for the decrease is devil facial tumor disease. Immunotherapy may one day be used to treat the condition.
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.
Dandelions have culinary benefits and also produce a latex that can be used to make rubber. This is important, since the supply of natural rubber is decreasing.
Have you have considered the power potential of the human body? What about the energy stored in a raindrop? In this article I discuss five strange methods that could one day become an integral way that civilization generates electricity.
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.
Serendipity is a happy and unexpected event that seems to occur by chance. It's often called a “lucky accident”. Serendipitous discoveries are important in science.
Cockroaches are fascinating insects. Some are pests and can transmit microbes that cause disease. One species is kept as a pet. Cockroach robots may be useful in the future.
Osteoblasts and osteoclasts control the production and disintegration of bone and the amount of calcium released from the bones into the bloodstream.
Another day, another particle physics mystery to unwrap. Let's see what beauty hadrons reveal about the Universe!
What are the most dreadful earthquakes of India. Below is the list of biggest earthquakes of India with images.
Marmots live in mountainous areas of British Columbia. They are social and very vocal animals that often form colonies. One species—the Vancouver Island Marmot—is critically endangered.
See pictures to help you identify the male and female Rose-breasted Grosbeak, plus learn facts about its migration and behavior.
Cone snails use their venom to paralyze their prey. Although the venom is often dangerous for humans, it contains chemicals that may have important medical benefits.
Acanthamoeba is a microscopic, single-celled organism that can infect the cornea of the eye. It causes a disorder called Acanthamoeba keratitis, which is most common in contact lens users.
The swell shark and the chain catshark produce beautiful patterns of light in a process called biofluorescence. The light emission may have important functions.
What different species of animals can interbreed and how is it possible? From mules to ligers learn all about hybrids in this comprehensive article.
Earwax is made by the lining of the ear canal and has important functions. An adequate amount of wax is necessary, but too much can lead to impaction and pain.
The deadly nightshade plant, or belladonna, is extremely poisonous. It contains atropine, a potentially dangerous chemical that has some important medical uses.
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.
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.
This article provides a technique for using the abacus to perform subtraction equations and a simple method for introducing children to subtraction.
Our skin is an impressive organ that has many functions. For example, it reduces water loss, fights infections, helps regulate body temperature, and makes vitamin D.
Michael Faraday, the son of an 18th Century blacksmith, became one of the greatest scientists of his age. One of his discoveries transformed the world and changed the way we live forever.
Some animals absorb chloroplasts or algae, which make food inside the animal's body. The exoskeleton of one type of insect makes electricity from solar energy.
Chloroform can act an anesthetic, but it’s toxic and causes serious health problems. There are ways to limit our exposure to the chloroform in the environment.
The frilled shark is a strange, deep-sea fish with a wide head, a huge mouth, and a long, eel-like body. The fish is caught as bycatch in some areas, which is a concern.
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.
The fossa is the largest predator in Madagascar. It's an agile tree climber and a very capable hunter. Its population is threatened by the destruction of its habitat.
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. The island is home to other fascinating and often unique organisms besides the tree.
Pyrosomes are elongated, thimble-shaped creatures that swim in the ocean and are bioluminescent. A pyrosome is actually a colony of small animals called tunicates.
At least 1000 types of fish—and probably many more—produce sounds. These sounds include pops, clicks, purrs, grunts, hums, hoots, rattles, and tinkles.
Inky cap mushrooms such as shaggy manes become a black, inky liquid in order to disperse their spores. Some contain coprine, which increases the unpleasant effects of alcohol intake.
Foxgloves are beautiful but poisonous flowers in the wild and in the garden. They contain digitalis, which is a useful heart medication but can also be dangerous.
Antibiotics interfere with vital activities in bacteria by various methods. Unfortunately, microbes are becoming resistant to the drugs. Arylomycins may be helpful in this situation.
Zombie ants are controlled by a fungus. Draculas eat the blood of their larvae. Some ants herd caterpillars or aphids and "milk" them. Leafcutter ants grow fungus to eat.
Mudskippers are unusual fish that may spend more time on land than in water. They use their pectoral fins as legs and breathe through their skin as well as their gills.
A microscope is a gateway to a fascinating and normally invisible world. Exploring this world with a suitable microscope and correct procedures is very enjoyable.
This guide explains everything you need to know about circles, including calculation of area, segment area, sector area, length of an arc, radians, sine and cosine.
Formic acid is found in the sprayed venom of some ants and the secretions of some stinging nettles. The acid is dangerous at high concentrations but has important uses.
Bowhead whales live in the Arctic, break through ice to breathe, and sing intriguing and beautiful songs. They have a large head with a huge, bow-shaped mouth.
Invertebrates are a diverse group of animals. This article discusses the nine most important of the 30 known phyla of invertebrates and includes images and descriptions of some of the most common examples of each type.
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.
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.
The common raven is an intelligent and interesting bird that plays an important role in folklore. The bird is found in many countries and habitats.
Shoebill storks, or shoebills, have a huge and impressive bill. The animal's unusual features make it a unique bird. Its population has been classified in the "Vulnerable" category of the IUCN's Red List.
African civets are interesting animals with some unusual characteristics. They are kept in captivity on civet farms so that their musk can be collected.
Saliva is made by salivary glands and has important functions. The glands may sometimes develop a stone or an infection. In Sjogren's syndrome, insufficient saliva is made. The disease may be accompanied by other symptoms.
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.
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.
A look at the diversity of Arizona's Coconino National Forest and some of the wildlife that makes its home there, in the northern part of the state, including the San Francisco Peaks near Flagstaff
Tiny microplastic particles are produced from plastic waste. The particles enter the human body in a variety of ways. Their effects on the body are unknown.
The hedge bindweed or morning glory twines around other plants and interferes with their growth. Bindweed produces large and beautiful flowers in summer.
The wood frog survives freezing. A study of its adaptations for survival may be helpful in understanding human health problems and in the use of organs for transplants.
This article summarizes the threat that asteroids and comets pose to the Earth. A short history of some of the greatest asteroid impacts on Earth is also provided.
Komodo, bearded, and frilled dragons are lizards. They are impressive reptiles. They have features that remind people of the dragons of myth and literature.
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.
Bees play a very important role in pollinating flowers, but the insects are disappearing. Pesticides may be at least partly responsible for this disappearance.
Ballistics is a branch of mechanics which deals with the motion of projectiles launched into the air or space. Solving these type of problems involves using Newton's equations of motion
The beautiful spirit bear has a white or cream coat and lives in the Great Bear Rainforest of British Columbia. It's an unusual form of the kermode bear, which is a subspecies of Ursus americanus.
The human skeleton has vital functions. It provides support and protection, allows us to move, makes blood cells, and stores fatty acids and minerals.