A new exhibition at Natural History Museum in London is taking visitors back nearly 200 million years to a time when giant marine reptiles ruled the oceans.

A new exhibition at Natural History Museum in London is taking visitors back nearly 200 million years to a time when giant marine reptiles ruled the oceans.

A new exhibition, Jurassic Oceans, showcases the fearsome creatures that lurked below the surface – and offers a stark warning about the impact of warming waters on marine…