North County Times: A UCLA researcher has analyzed fossilized algae, and says the rocks prove that the level of carbon dioxide in Earth’s atmosphere has not been this high for at least 1.5 million years. Aradhna Tripati, a UCLA assistant professor of Earth and space studies, published her findings Friday in the online edition of the journal Science. Current measurement techniques have used measurements of gases in trapped bubbles of air in Antarctic ice. But that has allowed scientists to measure …