There are many topics about Biology on this list, but you can also see my Technology List:https://owlcation.com/academia/100-Technology-Topi...
Here are a few more hot topics:
1. How much of a threat are the recent outbreaks in older viruses like Polio?
2. What will be the long-term effect of the extended drought in the Southwestern U.S.?
3. How can scientists and doctors best counter social media "challenges" like the Tide pod challenge and "cinnamon challenge"?
4. What is the risk of a new pandemic from some form of "bird flu" or other virus?
5. How can scientists counteract chemical weapons like Ricin?
6. Should federal funding in the U.S. expand to be used on more than the current 21 stem cell lines?
7. How can we best combat the MRSA staph bacteria which are resistant to antibiotics?
8. What is the best way to fight opioid addiction?