As commercial spaceflight draws ever closer and time spent in space continues to extend, the question of reproductive health ...

While many hail the ruling, critics fear mutant creatures may result. Sept. 13, 2007 — -- Last week, Britain made a landmark decision that allows researchers to use animal eggs in the creation of ...

When sperm meets egg, the start of life is not quiet. Under a special microscope, researchers have watched a tiny light show at fertilization. They see a microscopic flash at fertilization, a burst of ...

A new global dryland assessment using long-term satellite observations reveals widespread vegetation greening over the past two decades, reversing long-held expectations of accelerating ...