Study solves mystery of how plants use sunlight to tell time via cell protein signaling

Earth & Climate

KDFW Fox 4: NASA discovers seven earth-like planets relatively near

DFW Fox 4 TV reporter Steve Eagar expressed "nerd-level" excitement about NASA's announcement Feb. 22 of the discovery of seven new Earth-like planets. Eagar interviewed SMU professor Robert Kehoe, who leads the SMU astronomy team from the Department of Physics.

LiveScience: Tough Turtle — Dino-Killing Asteroid Spared Sea Creature

SMU paleontologist Timothy Scott Myers analyzed an ancient sea turtle whose ancestors may have survived an asteroid strike, the world's largest mass extinction event.

Textbook theory of how humans populated America is “biologically unviable,” study finds

The established theory of how Ice Age peoples first reached the present-day United States is now challenged by an unprecedented study that concludes that entry route was “biologically unviable.” The North American ice-free corridor, thought to have been used by the first colonizers, only became biologically viable 12,600 years ago — after they would have arrived. Researchers suggest a Pacific coast was the entry route.

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