Last Word Archive New Scientist. October 2. 01. 7. People seem to come in all shapes and sizes. Watch Roger Waters The Wall Online Fandango on this page. Do any other animals display the same amount of variation in size as humans among healthy adults?

Why is there this variety, and what are its consequences for the future? October 2. 01. 7. It seems ubiquitous at beaches for children to build sandcastles. Is this behaviour global? Is it innate or learned? Watch 24 Season 7 Episode 18 Online Free.

Did the children of nomadic, hunter- gatherer groups also build mounds in the sand? October 2. 01. 7. On the radio I heard complex birdsong that had been recorded at midnight in summer in Finland.

The Last Word has discussed what life is like for humans in polar regions, but how does wildlife cope with 2. October 2. 01. 7. Given that athletics races can be won or lost by a margin as small as a hundredth of a second, do athletes risk a gold medal by wearing gold chains? October 2. 01. 7. During the recent total solar eclipse in the US, I overlapped my hands, using the gaps between my fingers to form "pinholes". Just before the start of totality, someone noticed that the shadows formed through this "pinhole camera" onto a white board were so sharp that the individual hairs on my arms were visible.

Define deep: extending far from some surface or area: such as; extending far downward — deep in a sentence.

How thin must the solar crescent be for the shadows to be this sharp, and how soon before totality would this occur? October 2. 01. 7. Recently, my wife's silver car became covered by a swarm of flying ants. This was odd because none of the other cars parked nearby had any on at all. A friend mentioned it had happened to his silver car too and after searching online it seems it's a known phenomenon. Why is it that the swarm seems to be attracted to something silver?

October 2. 01. 7. If I park my car overnight on an open driveway in cold weather, I have to scrape frost from all of its windows in the morning. But if I park it under the adjacent carport, which is open on all sides but has a roof, no frost forms. Why does a roof make such a difference? October 2. 01. 7. Given the importance of the microbiota in our gut for well- being, is antibacterial mouthwash a good idea?

October 2. 01. 7. At any one time, around a million people are flying in aircraft. This is a total mass of about 6. Does this make us the most successful aerial animal now, or is there some species of insect, bird or bat with a greater airborne biomass? October 2. 01. 7. While holidaying on the Greek island of Paxos, I came upon a pebble beach where many of the stones had apparently been "engraved" by some type of creature. This example (see photo) is roughly 5.

What type of creature made these, and how and why?

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