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15 simple ways to spot a liar – from their voice to finger movements and fake smiles

Earth’s ancient core mysteriously froze solid — scientists say they now know why

Delighted mum shares clever hack to end toddler tantrums – and parents say it even helps with tidying up

The Amazon is drying at record speed – and edging closer to a catastrophic tipping point

What a healthy cortisol rhythm feels like – and how to make it part of your daily life