In what may be a natural response to rising global temperatures, Earth's clouds fell by an average of approximately one-percent over the first decade of this century, according to a new study.

New Caledonian crows have, in the past, distinguished themselves with their advanced tool using abilities. A team of researchers from the University of Auckland and the University of Cambridge have now shown these crows can learn to use new types of tools.

After being hunted to local extinction more than a century ago and unable to remember their ancestral calving grounds, the southern right whales of mainland New Zealand are coming home.

According to a new study in the British Medical Journal, women who do not sleep on their left side during late pregnancy have double the risk of late stillbirth.

Couples who have trouble conceiving could find help from antioxidants such as vitamin E and zinc, according to a new review of more than 30 studies.