The universe expands faster. “Dark energy” may not be constant after all.
For flowering plants to take over, they first helped burn the old world—and then put the fires out.
There’s a new generation of experiments that may unlock the gravity particle.
Ancient weeds mimicked crops, tricking farmers into domesticating friends—and enemies—by mistake.
Brains and brawn aren’t opposites—they’ve been linked far longer than we might think.
George visits chemists and discovers that Mexican Coke is doing something secretive.