The Yellow Pages use no virgin paper in the production of their directories, but to produce and deliver 540 million a year requires immense amounts of water and uses immense amounts of energy and fuel. If you need the Yellow Pages, keep it! But if you are among the 70% polled who say they never even open them, opt out. It is just a waste not to.

A student in my class once asked, do fish ever get thirsty? I was 15 at the time, and I remember my science teacher struggling to answer the question.

Here's the best possible answer I can give you -- it all depends whether the fish is a saltwater fish or a freshwater fish.



Notice how the fresh water fish actually obtains H2O via the food it consumes, not through drinking. Whereas the saltwater fish actually drinks the water can hence has highly concentrated urine. ...

We asks ourselves this a lot, so do stem cells!

Near the town of Tragöß in Styria, Austria you can find this stunning lake known as Grüner See (Green Lake). Named Green Lake for its amazingly clear emerald green water it’s mostly the result of seasonal snowmelt from the surrounding Hochschwab Mountains and forests.



During winter months the lake is only 1-2m deep with the rest of the area used as a county park, however as spring arrives the lake grows in size from all the melting snow reaching at its peak around mid-May 12m deep in places. Not surprisingly the waters are a little chilly at 6-7oC, although it remains popular among divers during the peak months who love to pose on the underwater bench and visit the flooded green meadows. ...

Octopus reproduction is fairly uniform across species. When a female is ready to mate, she releases a chemical into the water that attracts males. They follow this chemical to the female, where they will often fight one another for the right to mate with the female. Sometimes the female will mate with more than one male. The same chemical that attracts the males stops the males from eating the female - cannibalism is common amongst octopodes.

Once it has been decided who will be mating, the male transfers packages of sperm called \"spermatophores\" to the female using his third right arm (which typically has no suckers). The female stores these, and then builds a den. She then seals the entrance. Once this is complete, she lays the eggs and ...