We’ve assembled a Dream Team this week - Pete’s dad is around for the first time in ages, as is Ivan. We should be in with a good chance of a second victory in four weeks, and if there are any cricket questions we’ll be laughing. Well, I’ll be groaning but Ivan will [...]

The temperature of the Earth’s atmosphere is determined by the balance between incoming and outgoing radiation. The ground absorbs sunlight, which warms it up, and it emits infrared radiation. The atmosphere is transparent to visible light, but absorbs strongly at many infrared wavelengths. Because radiation from the ground is absorbed, the atmosphere [...]