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Preserving tropical forests is the cheapest way of combating climate change - so why aren't we doing it?
The BBC's Stephanie Holmes explores the role of international tourism in exacerbating climate change and how governments are facing the challenge.
A preview of the day's racing - plus the Five Live tip of the day.
A preview of the day's racing - plus the Five Live tip of the day.
Russia and the US are to review a deal regulating the recovery of uranium from old Soviet nuclear weapons.
A leading seismologist tells the BBC that history suggests the Kashmir region will face more earthquakes.
A former civil defence worker's home is up for sale with a few mod cons, including its own nuclear bunker.
Scientists want to build the world's biggest tank of water under the Alps to detect particles from the Sun's core.
US astronauts are calling for an unmanned mission to test ways to deflect an asteroid threatening to strike the Earth.
Atomic scientist Edward Teller, widely known as the "father of the H-bomb", has died at the age of 95.
An ill-fated Russian nuclear submarine whose story made it into a Hollywood blockbuster is about to be cut to pieces
Tesco joins the bidding frenzy for UK supermarket chain Safeway, and the BBC's Declan Curry says the bid might make more sense than it looks.
Astronomers find the crater on the Moon that is the only permanent change ever observed on our satellite.
Fifty years ago on Friday, the world's first hydrogen bomb was detonated at a United States test site in the Pacific Ocean.
A meteor exploding in Earth's atmosphere could trigger a nuclear exchange says a top US general.
The US space agency Nasa launches a spacecraft that will study the most powerful explosions in the Solar System.
The Sun has unleashed a huge flare - one of the biggest explosions ever seen in the star's atmosphere.
Experts are to warn the UK Government that more must be done to protect the Earth from the threat of a catastrophic collision.
Experts are to warn the UK Government that more must be done to defend the Earth from the threat of a catastrophic collision.
Astronomers have found a star system that will explode with great violence - sometime in the next 200 million years or so.
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