What we know so far about the science behind blood clotting, our understanding of how it might be connected to the AstraZeneca vaccine, and how scientists and health authorities are investigating the risks.

How scientists and health authorities keep a close eye on the safety and effectiveness of vaccines, including after those vaccines are rolled out to the public.

We can harness the power of the immune system to successfully prevent some nasty diseases through immunisation—but what about other diseases such as cancer?

If you’ve ever owned a cat—or been in contact with undercooked meat, or unwashed vegetables—you may be carrying a parasite called Toxoplasma gondii.

People have very strong feelings about coriander, but why is there such a massive difference in how we perceive its taste?