Chemical

Mother of a fireman Zhang Qian who killed in the Tianjin chemical explosions accident,  grieves on her son's tombstone at the 100th days memorial  in a martyr's cemetery in Tianjin city, China, on Thursday. Explosions and a fireball at a chemical warehouse killed at least 165 people in the north-eastern Chinese port city of Tianjin late on 12 August. The magnitude of the initial blast was similar to three tons of TNT exploding and a second blast's magnitude was equivalent to 21 tons of TNT, China's earthquake bureau said.

EPA

Mother of a fireman Zhang Qian who killed in the Tianjin chemical explosions accident, grieves on her son’s tombstone at the 100th days memorial in a martyr’s cemetery in Tianjin city, China, on Thursday

Employees of the French chemical firm Kem One demonstrate in the streets of Lyon on September 26, 2013 as Lyon's commercial court examined their situation. The 1,300 employees of Kem One, placed into receivership since March 27, were due to be informed about potential buyers and their restructuring projects but the court delayed its final decision to December 12.

Jeff Pachoud/AFP

Employees of the French chemical group Kem One demonstrate in the streets of Lyon on Thursday as the city’s commercial court examined their situation. The 1,300 staff of Kem One, placed into receivership since March 27, were due to be informed about potential buyers and their restructuring projects but the court delayed its final decision until December 12.

In this Tuesday, Sept. 17, 2013 photo, a Syrian opposition fighter rests inside a cave at a rebel camp in the Idlib Provence countryside of Syria. The main Syrian opposition coalition urged the international community to take swift action against the regime of President Bashar Assad in response to a U.N. finding that the nerve agent sarin was used in a deadly attack near the capital last month.

Narciso Contreras/AP

A Syrian opposition fighter rests inside a cave at a rebel camp in the Idlib province countryside of Syria. The main Syrian opposition coalition urged the international community to take swift action against the regime of President Bashar Assad in response to a UN finding that the nerve agent sarin was used in a deadly attack near the capital last month