Plants' water oxidation possible 3.5 billion years ago
Evidence that photosynthesis emerged one billion years before evolution of key bacteria suggests that potential for extraterrestrial life may be higher than previously thought.
Does teen cannabis use lead to behavior problems – or vice versa?
Study finds that while not all teens who use marijuana have conduct problems, those with preexisting conduct problems tend to gravitate toward its use.
Hang in there. As couples age, humor replaces bickering
Researchers find that as couples age negative behaviors, such as defensiveness and criticism, tend to wane as positive ones, such as humor and affection, become more prevalent.
