The climate is warming, and much of the increase is due to greenhouse gases, the most prevalent gas being carbon dioxide. Methods for removing existing carbon from the atmosphere are in the works, and ...

After a hiatus of more than 10 years, a new round of research into ocean iron fertilization is set to begin, with scientists saying the controversial geoengineering approach has the potential to ...

One round of IVF costs up to $40,000. For millions of Californians, that barrier to parenthood just disappeared thanks to a ...

In an underwater nursery just off the Dominican Republic coast, tiny corals born in a laboratory are slowly growing under the ...

A new study identifies the defective function of CatSper, an ion channel controlling calcium levels in sperm, as a common cause of seemingly unexplained male infertility. CatSper-deficient human sperm ...

In a common metaphor used to describe human fertilization, sperm cells are competitors racing to penetrate a passive egg. But as critics have noted, the description is also a “fairy tale” rooted in ...

When dolphins sleep, they shut down only one hemisphere of the brain at a time. The other half of the brain stays awake to keep the dolphin breathing, moving, and aware of its environment. Image ...