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Catholics who grew up in the faith under Francis reflect on his tenure as pope.

With good rains for the past two years in Kenya, Amboseli National Park has seen an elephant baby boom, including two rare sets of twins.

As the government shutdown enters a third week, confusion abounds in many federal departments and agencies. Among the places left in limbo are America's many national parks.

Too much light at night and not enough daylight is taking years off our lives, according to a new study. The research adds to the evidence that light exposure is fundamental to our wellbeing.

Scientists are sending stem cells into orbit where the forces of gravity won't interfere with how they cells proliferate and assemble into small organ-like clusters.

Scientists have pinpointed a special part of the brain that, when stimulated, appears to produce out-of-body experiences.

Hold out your hand for a century, and 100 million particles of dark matter will pass through each second without leaving a trace. Still, a physicist in South Dakota thinks he may be able to catch one.

Yayoi Kusama, the 93-year-old Japanese artist, is famous for her immersive infinity rooms. Starting April 1, the Hirshhorn in D.C. will be displaying two of these dazzling works.

With the death of a northern white rhino in San Diego's zoo this week, researchers are working to see whether they can save the species. They'd better hurry — only five remain.

The new normal of a hotter, drier longer droughts could change diets, pollute air and force ever more desperate measures to find water