February – The West African Ebola virus epidemic begins, infecting at least 28,616 people and killing at least 11,310 people, the most severe both in terms of numbers of infections and casualties.[4][5]
February 28 – The number of people in the U.S. using mobile devices to access the internet overtook those using desktop computers for the first time, a feat which would be followed globally two years later in 2016.[9][10][11][12][13]
March 24 – During an emergency meeting, the United Kingdom, the United States, Italy, Germany, France, Japan, and Canada temporarily suspend Russia from the G8,[19] recognizing Crimea within Ukraine's international borders and rejecting the validity of the 2014 Crimean referendum.[20]
June 12 – In the Camp Speicher massacre in Iraq, ISIL kills 1,566 Shia Iraqi Air Force cadets. It is the second deadliest terrorist attack in history and the deadliest attack conducted by ISIL.[36]
September 21 – The Battle of Sanaa leads to the start of the Yemeni Civil War, as Houthi forces capture the capital city Sanaa, followed by a rapid Houthi takeover of the government.
September 28 – Hong Kong protests: Benny Tai Yiu-ting announces that Occupy Central is launched as Hong Kong's government headquarters is being occupied by thousands of protesters. Hong Kong police resort to tear gas to disperse protesters but thousands remain.
October 24 – Alan Eustace, an American computer scientist, sets a world record highest and longest free fall jump from 135,908 feet (41.425km) over Roswell, New Mexico, United States, breaking the sound barrier without any machine assistance during a record space dive out of a massive helium-filled balloon. His descent to Earth lasts 4 minutes 27 seconds and stretches nearly 26 miles (42km) with peak speeds exceeding 822 miles per hour (1,323km/h), setting new world records for the highest free-fall jump and total free-fall distance 123,414 feet (37,617m).[60][61][62][63]
Lappin, Yaakov; Keinon, Herb (July 17, 2014). "IDF starts Gaza ground offensive". The Jerusalem Post. Archived from the original on July 17, 2014. Retrieved July 17, 2014.
Glenn, Cameron (April 27, 2016). "Timeline: US Policy on ISIS". Wilson Center. Archived from the original on October 8, 2016. Retrieved February 13, 2017.