Heat

Melvyn Bragg and guests discuss the evolution of lungs and of the first breaths, which can be traced back 400 million years to when animal life spread from rock pools and swamps onto land, as some fish found an evolutionary advantage in getting their oxygen from air rather than w ...  Show more

Melvyn Bragg and guests discuss the decisive role of one of the great 20th Century physicists in solving the question of nuclear fission. It is said that Meitner (1878-1968) made this breakthrough over Christmas 1938 while she was sitting on a log in Sweden during a snowy walk wi ...  Show more

Last summer saw intense heatwaves across the world. And already this year, global air, surface and sea temperatures have hit the highest levels on record. China, India and the US are currently experiencing heatwaves. In June, the UK’s Met Office released a health warning because ...  Show more

Deadly heat has been building over the Indian sub-continent for weeks and this week reached crisis levels. India experienced its hottest March on record and temperatures over 40 degrees Celsius (and in some places approaching 50 degrees) are making it almost impossible for 1.4 bi ...  Show more

Melvyn Bragg and his guests discuss the Sun. The object that gives the Earth its light and heat is a massive ball of gas and plasma 93 million miles away. Thanks to the nuclear fusion reactions taking place at its core, the Sun has been shining for four and a half billion years. ...  Show more

In this episode, we break the thermometer watch the mercury spill out as we discover temperature is far stranger than it seems. Five stories that run the gamut from snakes to stars. We start out underwater, with a snake that has evolved a devious trick for keeping warm. Then w ...