Alien Earths Could Form Earlier than Expected
Anchorage, AK – Building a terrestrial planet requires raw materials that weren't available in the early history of the universe.
Common ancestor comes into focus, It Resembled a Shark
The common ancestor of all jawed vertebrates on Earth resembled a shark, according to a new analysis of the braincase of a 290-million-year-old fossil fish that has long puzzled paleontologists.
Volcanic Gases Could Deplete Ozone Layer
SELFOSS, ICELAND—Giant volcanic eruptions in Nicaragua over the past 70,000 years could have injected enough gases into the atmosphere to temporarily thin the ozone layer, according to new research. And, if it happened today, a similar explosive eruption could do the same, releasing more than twice the amount of ozone-depleting halogen gases currently in stratosphere […]
Study Finds Evidence of Major Extraterrestrial Impacts 12,900 Years Ago
(Santa Barbara, Calif.) –– An 18-member international team of researchers that includes James Kennett, professor of earth science at UC Santa Barbara, has discovered melt-glass material in a thin layer of sedimentary rock in Pennsylvania, South Carolina, and Syria.