World's oldest turtle shells stand test of time

Plucked from a pit of grey clay next to a rubbish dump in southern Poland, fossilised turtle shells resembling the battle-scarred shields of ancient warriors are the world's oldest and most complete.

Formation of coal almost turned our planet into a snowball

While burning coal today causes Earth to overheat, about 300 million years ago, the formation of coal brought the planet close to global glaciation. For the first time, scientists show the massive effect in a study to be ...

End to cheap coal closer than we thought?

(PhysOrg.com) -- A report entitled "The End of Cheap Coal," published in the journal Nature by Richard Heinberg and David Fridley, suggests we may reach peak coal in the next two decades.

Most coal must stay in ground to save climate

Most fossil fuels must remain in the ground because burning them will unleash changes that will "challenge the existence of our society", a new Australian government agency report warned Monday.

Nuclear power or shale gas? Poland may have to choose

Poland has set it sights on building its first nuclear power station and developing shale gas, but experts believe it may soon have to choose one or the other as investing in both could prove too costly.

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