The amount of free oxygen on the planet skyrocketed, making the planet ideal for complex life.
The week's best photos from around the world, from Hurricane Irma and Mexico earthquake to the Rohingya crisis and Australia's same-sex marriage vote.
Britain's Defence Minister Michael Fallon said his government's effort was "as good as anybody else's". But is it?
This year's summer Icebridge mission started on 25 August and will go on till 21 September.
Offshore wind power now cheaper than new nuclear power, government figures show.
After the punishing heat of the 'Lucifer' summer downpours cause death and chaos
Government under cross-bench pressure to justify slow response to catastrophe that has battered the Caribbean.
Favourable conditions in the Atlantic are fuelling devastating tropical storms.
The week's best photos from around the world, from Burning Man and Hurricanes Harvey and Irma to the US Open and World Cup qualifiers.
Irma's winds of around 175mph (290kph) tore down trees, and flattened homes, schools and hotels, destroying some of the world's most exclusive tourist resorts.
Nasa classified Irma as a Category 5 hurricane, Katia as Category 1, while Jose continues to gain strength.
Hurricane Irma, one of the most powerful Atlantic storms in a century, is heading directly towards Florida after it lashed the Caribbean.
There could be unique whole ecosystems of complex life to be uncovered.
Smashed hotels, boats tossed into piles, and flooded streets and homes on Sint Maarten, the Dutch side of the Caribbean island of Saint Martin.
New research suggests falling renewable energy costs are being complemented by higher efficiencies.