What is rubber? History of rubber
A big rubber tree in Mexico Olmec people, living in southern Mexico, invented rubber about 1600 BC. It was just as they were beginning to build their empire. Rubber starts out as [...]
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09, 2017
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07, 2017
Ancient Greek climate, plants, and animals
Ancient Greek climate: The island of Rhodes Good fishing Fishing was very important to early Stone Age people, and fishing is probably what brought the first people to [...]
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05, 2017
Flowering plants – Evolution and Biology
Flowering plants: Lavender flowers smell wonderful! Before there were flowers... For millions of years, the Earth was covered with ferns and pine trees and moss and mushrooms, without any flowers, grass, [...]
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05, 2017
What are cycads? Evolution and Biology
Cycad trees. They look like palm trees but they are very different! At the end of the Carboniferous period, about 300 million years ago, the only kinds of plants on [...]
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05, 2017
Leaf project – Chloroplasts and Cell Biology
Fall leaves from a maple tree: their chloroplasts are dying off Why do leaves turn color? You can see that leaves are only green because of the chloroplasts, because in [...]
