Triathletes participate in a grueling endurance sport, swimming, bicycling, and running long distances without rest.

The Massachusetts Institute of Technology will this fall package some of its online courses into more cohesive sequences, just as edX prepares to roll out certificates of completion using identity verification.

More than 130 faculty members at Wellesley College have signed an open letter saying that they will urge the college to reconsider its institutional partnership with Peking University if a professor of economics there is fired for his outspoken advocacy of democracy and individual freedom.

What's better than fresh, locally grown fruits and vegetables?

D-Day for rhinos is 2026, according to South African officials -- the year the majestic mammals will near extinction if current poaching rates continue.

Primitive society was not driven by war, scientists believe.

The world suffered unprecedented climate extremes in the decade to 2010 ...

A "climate bomb" of potent greenhouse gases 15,000 times more damaging to the climate than carbon dioxide is set to be released by some of the world's leading producers of refrigerants following a ban on climate credits

Russian President Vladimir Putin, arriving in Britain ahead of an international summit set to be dominated by disagreement over the US decision to send weapons to Syria's rebels ...

A year after adopting changes to its long-standing forestry policy, Brazil is struggling to implement the new rules ...