Tega is a robot that uses artificial intelligence to read and respond to kid's emotions.
Fossilized fish appear to preserve the fallout of the asteroid that killed the dinosaurs.
A pioneer of climate science, explains why he wishes he could have lived another 50 years.
Sea level rise and heavy rains pose logistical challenges to Norfolk, Virginia's Navy.
If you think you understand the polar vortex, think again.
Can AI technology help 12-year-old Kaden, who is nonverbal, find his voice?