We break down the numbers and asked industry experts whether powering an electric vehicle or filling a gas tank is truly ...

Hamilton's rule, introduced in the 1960s, says that altruism—helping others at your own expense—can evolve when the benefits ...

Which creatures truly count as cognitive? And which as conscious? From simple organisms to humans, scientists debate the ...

Populations live in rapidly changing environments—droughts come and go, food sources change, human activities reshape ...