The whole of the Earth heated up in medieval times without human CO2 emissions, says new study

Current theories of the causes and impact of global warming have been thrown into question by a new study which shows that during medieval times the whole of the planet heated up.

It then cooled down naturally and there was even a 'mini ice age'.

A team of scientists led by geochemist Zunli Lu from Syracuse University in New York state, has found that contrary to the ‘consensus’, the ‘Medieval Warm Period’ approximately 500 to 1,000 years ago wasn’t just confined to Europe.In fact, it extended all the way down to Antarctica – which means that the Earth has already experience global warming without the aid of human CO2 emissions.

This is one of the huge holes in the man-made-global-warming theory. You can prove just about anything if you can choose the beginning and end points of your data series. And that's pretty much what the Global Warmists did.