http://en.wikipedia.org/wiki/Homo_ergaster
http://en.wikipedia.org/wiki/Homo_heidelbergensis
http://en.wikipedia.org/wiki/Homo_sapiens
http://en.wikipedia.org/wiki/Homo_neanderthalensis
http://en.wikipedia.org/wiki/Homo_habilis
http://en.wikipedia.org/wiki/Homo_erectus
http://en.wikipedia.org/wiki/Homo_rudolfensis
Tuesday, April 30, 2013
Tuesday, April 23, 2013
Sunday, April 21, 2013
Inside Nature's Giants - Camel
Watch Camel on PBS. See more from Inside Nature's Giants.
Watch and tell how a camel is physically adapted to survive!
Tuesday, April 16, 2013
Monday, April 15, 2013
Sunday, April 14, 2013
Wednesday, April 10, 2013
Thursday, April 4, 2013
Wednesday, April 3, 2013
Feathers under 4x Magnification
Primary (flight feather) You can see the shaft down the middle and that the vanes hook together to create a smooth surface so the bird's wing will generate lift.
Down (under feather) You can see the shaft down the middle and that the vanes do not hook together, so the feather remains soft and fluffy. This makes it really good for trapping air and insulating the bird.
Down (under feather) You can see the shaft down the middle and that the vanes do not hook together, so the feather remains soft and fluffy. This makes it really good for trapping air and insulating the bird.
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