Technology Gizmo Disappearing labels could soon tell you when food in your fridge is out of date. The National Taiwan University in Taipei has developed an ink based on anthraquinone β-sulfonate, which fades from red to beige in the presence of oxygen. Varying the thickness of a gas-permeable polyacrylate film on top of a food label allows … News
Comment: Can fiction make a difference? THE sea is rising, driven by melting ice and the expansion of warmer water – a consequence of climate change. Already on islands like Tuvalu in the Pacific Ocean, the trees are poisoned by salt, and children's football games have to be abandoned as high tide approaches and the water bubbles out of the ground. … Opinion
Life Circumcision: To cut or not to cut? ...... IMAGINE a quick and simple surgical procedure that trials have shown could give your newborn child lifelong protection against HIV and may ward off sexually transmitted diseases and cancer too. It involves a little pain and bleeding, and occasionally goes wrong, but the risk of serious adverse effects is tiny. Would you have it … Features
Books to travel with: Central Park in the Dark by Marie Winn MARIE WINN won her nature-writing spurs with Red-Tails in Love , about two hawks that built a nest on 5th Avenue. Now she braves America's most famous park at night, in this enjoyable celebration of the wildlife that makes its home in New York's Central Park. It may be a human creation, but real wildness … Books & Arts
Books to travel with: What the Nose Knows: The science of scent in everyday life by Avery Gilbert Books & Arts
Feedback US holds fossilised UFO REMEMBER when the joke was that on the internet, no one knows you're a dog? Perhaps that should now be changed to: no one knows for sure if you're a raving loon. We keep stumbling upon and puzzling over web pages like www.americanchronicle.com/articles/66764 – which reports that the US government secretly … Regulars