British scientists develop a new way to create an entirely synthetic vaccine which does not rely on using live infectious virus, meaning it is much safer.

The first wild beaver in more than 400 years is trapped at a Perthshire nature reserve in order to perform health checks and a DNA test.

A severe plague of locusts has infested about half of Madagascar, threatening crops and raising concerns about food shortages, a UN agency says.

Sea hares fool hungry predators with a sticky secretion that deactivates their sense of smell, scientists say.