Drought stress in trees: What to expect and what to do

Recurring and prolonged periods of drought are worsening worldwide, triggering a dangerous chain reaction for trees, according to a forest health expert at North Carolina State University.

Evolutionary process behind live birth in lizards uncovered

Scientists studying one of nature's greatest reproductive innovations have discovered how some lizards evolved from laying eggs to giving birth to live young. The new research is the first to reveal the evolutionary process ...

page 2 from 5