A baby male chimpanzee is nursed by his mother 'Kuma' (L) at Taronga Zoo on October 25, 2013 in Sydney, Australia.

It has been oft-debated whether or not human interjection has influenced how violent chimpanzees can be.

An eagle is seen flying inside a tropical rainforest at Kerumutan protected tropical rainforest, which is the Sumatran tiger habitat in Pelalawan district on July 12, 2014 in Riau province, Sumatra, Indonesia.

A report counters the theory that investing in preventing climate change hurts world economies.

Indian 'Agariya' (saltpan) worker Manjuben Ishwarbhai rakes a saltpan in Kharaghoda some 120kms. from Ahmedabad on December 19, 2008.

The CDC has warned that 9 out of 10 U.S. children are consuming high levels of sodium.

Medical staff performs an Ebola-preventing exercise on September 11, 2014 in Foshan, Guangdong province of China.

The outbreak has reached unmanageable standards, and requires international attention.

Michael Sanchez, age 84, lies in the outpatient section of the health care building at Valley State Prison (VSP) on December 18, 2013 in Chowchilla, California.

A new test can help doctors diagnose and treat depression in adults.