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Associated Press – Global warming is changing the way the Earth spins on its axis

Global warming is shifting the way the Earth wobbles on its polar axis, a new NASA study finds. Melting ice sheets — especially in Greenland — are changing the distribution of weight on Earth. And that has caused both the North Pole and the wobble, which is called polar motion, to change course, according to a study published Friday in …

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Life on Earth likely started 4.1 billion years ago — much earlier than scientists thought

UCLA geochemists have found evidence that life likely existed on Earth at least 4.1 billion years ago — 300 million years earlier than previous research suggested. The discovery indicates that life may have begun shortly after the planet formed 4.54 billion years ago. The research is published today in the online early edition of the journal Proceedings of the National …

gas and oil wells in texas

Scientists warn of hormone impacts from benzene, xylene, other common solvents – Brian Bienkowski

Four chemicals present both inside and outside homes might disrupt our endocrine systems at levels considered safe by the U.S. Environmental Protection Agency, according to an analysis released today. The chemicals – benzene, toluene, ethylbenzene and xylene – are ubiquitous: in the air outside and in many products inside homes and businesses. They have been linked to reproductive, respiratory and heart …

primordial dna

New study hints at spontaneous appearance of primordial DNA

The self-organization properties of DNA-like molecular fragments four billion years ago may have guided their own growth into repeating chemical chains long enough to act as a basis for primitive life, says a new study by the University of Colorado Boulder and the University of Milan. While studies of ancient mineral formations contain evidence for the evolution of bacteria from …