Main content
How many calories are there in a brain?
We answer your science questions this week. Including how many calories you'd find in a human brain, and why methane's a worse greenhouse gas than CO2.
The mailbag was bulging, so we dived in to answer your science questions this week.
Including how many calories you'd find in a human brain, why methane's a worse greenhouse gas than CO2, and the claim that MI5 phoned up the makers of a James Bond movie for advice on making a special agent gadget.
Podcast
-
![]()
5 Live Science Podcast
The hottest science news, stories and analysis from Dr Chris and the Naked Scientists.
