Its crust is continually being created, modified, and destroyed.
Are any mosquitoes evolving with delayed-action stings or reduced sting secretions so they can drink blood without the threat of imminent death?
After I released a lamb that had got its head stuck in a fence, it ran halfway across the field to a ewe and immediately started suckling.
The method was developed by Willard Libby in the late 1940s and soon became a standard tool for archaeologists.
Libby received the Nobel Prize in Chemistry for his work in 1960.
Nevertheless, there is substantial evidence that the Earth and the other bodies of the Solar System are 4.5-4.6 billion years old, and that the Milky Way Galaxy and the Universe are older still.
The principal evidence for the antiquity of Earth and its cosmic surroundings is: Spontaneous breakdown or decay of atomic nuclei, termed radioactive decay, is the basis for all radiometric dating methods.In countries where there are lots of stray cats and dogs, many are in poor condition, especially compared with the truly wild animals that live in the same places. The battle for survival must be incredibly tough for all these animals.Is it because feral domesticated animals can somehow live on in poor health through their association with humans, whereas nature would ruthlessly pick off any weaklings in the wild animal population?In your article about housework ("Germ warfare", 14 January), you said that after washing dishes we should "rinse with plenty of water, preferably hot". Wouldn't it save money if they were rinsed with the cold water that comes directly from the mains?Mosquito bites frequently induce a sharp sting in people and some animals, with severe evolutionary consequences for the mosquito when it gets swatted.My French granny says it is more hygienic to poo in a big hole in the garden, like she did when she was growing up, than it is to go inside. She also said that in olden days, people collected pee and used it to make plants grow better. An earlier question in The Last Word gave warnings about eating leftover rice.