From the archives 20 years ago: the great phone cancer scare
16 April 2019
In April 1999, New Scientist decided to test 'radiation protection devices' against the harmful effects of mobile phones
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Premium
Magnificent pumas photographed in snowstorms and whilst catching prey
16 April 2019
Pumas in Chile's Torres del Paine National Park have hard lives. It rains and snows year-round, and winds reach speeds of up to 150 kilometres per hour
Toast, not toast
16 April 2019
Heating bread in a toaster and a microwave oven creates very different results. What do microwaves do to bread?
Core Subject
16 April 2019
At school we were shown that heating a bar magnet caused it to lose its magnetism. How then, if the iron core of Earth is at a temperature high enough to liquefy it, does it generate a vast magnetic field?
Cracked it
16 April 2019
Why do I, or any other human, get sore and cracked heels? I understand it's less common in men than women – presumably this is down to footwear choices? The cream product I use to cure it works very well, but its active ingredient appears to be urea....
Making new oranges
16 April 2019
I have just spent a few hours cutting up oranges and lemons to make marmalade, and was startled to see that none of the oranges had seeds. How do the trees they come from reproduce?
Feedback: Why replicate an experiment when you can flip a coin?
16 April 2019
Plus veggie burgers get a rebrand, Uri Geller tries his hand at political protest, and bits of Cornwall go on holiday to North Africa
