EarthBurst of animal evolution altered chemical make-up of Earth's mantle The Cambrian explosion 500 million years ago saw a huge variety of animals evolve – and also led to carbon being buried in the seabed and ultimately carried into the planet’s mantle News
LifeSome bee colonies have to kill thousands of ‘selfish’ wannabe queens About one-fifth of all Melipona beecheii stingless bee larvae develop as queens, but the colony accepts only one – the rest are executed by worker guards News