A big question in the origin of life on Earth is why it is based solely on "left-handed" amino acids. Studies on asteroid Bennu's chemical building blocks deepens the mystery.

Is uniform "handedness" a secret ingredient in the recipe for life, and more specifically, did it have to turn left? Did the bias toward left-handed amino acids begin in the cosmos, or did it ...

You’re in the turn lane of an intersection waiting to turn left, but traffic heading the opposite direction just won’t let up. The driver in front of you has clearly gotten impatient ...

Is that legal? Can you get a ticket or arrested for sneaking into the intersection while waiting to turn left? Here’s what California law says: Yes, you can legally pull into an intersection ...