SpaceWhy sending messages to extraterrestrials is controversial If there are intelligent aliens out there, should we try to get in touch with them? And who should speak for Earth, asks professor of astronomy Chris Impey91É«Ç鯬
MathematicsHow maths reveals the best time to add milk for hotter tea If you want your cup of tea to stay as hot as possible, should you put milk in immediately, or wait until you are ready to drink it? Katie Steckles does the sums Regulars