MSF health worker is seen in high risk area at the ELWA 3 Ebola Centre of Doctors Without Borders (MSF) on October 16, 2014 in Paynesville suburb east of Monrovia, Liberia.

Doctors Without Borders warns some measures are having a "chilling effect" on its work.

German partyleader Simone Peter (2ndL), co-leader of the German Greens Party, attends a rallye of activists protesting against the expansion of nearby open-pit coal mines form a human chain from Germany into Poland on August 23, 2014 near Gross Gastrose, Germany.

Reached landmark deal to cut greenhouse gas emissions by 40% by 2030, compared with 1990 levels.

Some of the candy edibles are kept in plastic cases on the wall, ready to be scanned for purchase.

A panel recommends that cannabis-laced food that is attractive to children be banned.

Surgeons take a heart valve out of a donor pig at St. Anne's University Hospital on September 16, 2013 in Brno, Czech Republic.

Surgeons performed successful transplants of hearts that had stopped beating for 20 minutes.

John Packer, a 41-year-old tiler, drinks a beer at a seafront restaurant in the resort town of Kovalam, in southern Kerala state on September 9, 2014.

A study done shows that one or two drinks a day can help with memory in older people.