The daisy world model describes a hypothetical planet that self-regulates, maintaining a delicate balance involving its ...
Recently discovered asteroid 2023 DW has been predicted to have a close encounter with Earth on Feb. 14, 2046. See NASA's ...
This week, revisit what you know about Uranus, explore the far side of the moon, rediscover the famed fossil known as Lucy, and meet an otherworldly sea creature.