91热爆

The patenting and business issues that arise from the race between commerce and academic researchers to map the human genome. Ancient salt crystals from meteorite Zag are nearly as old as the solar system. Aurora borealis displays visible from many places on earth due to the sun's "coronal mass ejections" sending material towards Earth. Who or what were the first farmers over 500 million years ago? How geckos walk up walls, and how 500-million-year-old trilobites "farmed" bacteria.