Blast clues in rare clouds WHAT do the space shuttle and a giant explosion in 1908 have in common? Both have been followed by strange, glowing clouds, and these may point to what caused the Tunguska blast a century ago . The blast destroyed a swathe of Siberian forest near the Tunguska river, and a day later people across Europe … News
Earth Interview: The elephant whisperer Video: See Lawrence Anthony communicating with elephants Lawrence Anthony's work with elephants has led to him becoming know as "the elephant whisperer" The communication between human and elephant is a two-way process and takes time to build up a rapport Lawrence Anthony pictured on the Thula game reserve in Zululand, South Africa From rescuing a … Opinion
Earth Sea level rise: It's worse than we thought Greenland is already losing enough ice to raise sea level by 0.8 millimetres per year Ancient reefs in Mexico suggest the sea rose 3 metres within 100 years See our related editorial FOR a few minutes David Holland forgets about his work and screams like a kid on a roller coaster. The small helicopter he's … Features
Enigma Number 1552 Prime products What are the three different digits that, whichever order you write them down in, form a three-digit integer that is not itself prime but is the product of two primes? WIN £15 will be awarded to the sender of the first correct answer opened on Wednesday 5 August. The Editor's decision is final. … Regulars
The usefulness of a wet sponge holiday detector FEEDBACK is delighted to discover a product that we never knew we needed: the "holiday detector". You may well ask, as we initially did, why anyone would need such a device. The symptoms of a holiday were, we naively thought, fairly readily observed: the computer is turned off, the shovels are in the shed, the … Regulars