Coastal cities face rising risk of flood losses, study says
The world's 136 largest coastal cities could risk combined annual losses of $1 trillion (750 billion euros) from floods by 2050 unless they drastically raise their defences, a study warned Sunday.
New study proves Moon was created in massive planetary collision
(Phys.org)—It's a big claim, but Washington University in St. Louis planetary scientist Frédéric Moynier says his group has discovered evidence that the Moon was born in a flaming blaze of glory when ...
Massive volcanoes, meteorite impacts delivered one-two death punch to dinosaurs: study
(PhysOrg.com) -- A cosmic one-two punch of colossal volcanic eruptions and meteorite strikes likely caused the mass-extinction event at the end of the Cretaceous period that is famous for killing the dinosaurs ...
Possible trigger for volcanic 'super-eruptions' found
The "super-eruption" of a major volcanic system occurs about every 100,000 years and is considered one of the most catastrophic natural events on Earth, yet scientists have long been unsure about what triggers ...
Geologist investigates canyon carved in just three days in Texas flood
In the summer of 2002, a week of heavy rains in Central Texas caused Canyon Lake -- the reservoir of the Canyon Dam -- to flood over its spillway and down the Guadalupe River Valley in a planned diversion ...
Harpooning space debris
(Phys.org) —Faced with the challenge of capturing tumbling satellites to clear key orbits, ESA is considering turning to an ancient terrestrial technology: the harpoon.
Stability lost as supernovae explode
Exploding supernovae are a phenomenon that is still not fully understood. The trouble is that the state of nuclear matter in stars cannot be reproduced on Earth.
World's oldest weather report could revise Bronze Age chronology
(Phys.org) —An inscription on a 3,500-year-old stone block from Egypt may be one of the world's oldest weather reports—and could provide new evidence about the chronology of events in the ancient Middle ...
Crash-testing lithium-ion batteries
Lithium-ion batteries are lightweight, fully rechargeable, and can pack a lot of energy into a small volume—making them attractive as power sources for hybrid and electric vehicles.
Greenhouse gas level highest in two million years, NOAA reports (Update 2)
Worldwide levels of the greenhouse gas that plays the biggest role in global warming have reached their highest level in almost 2 million years—an amount never before encountered by humans, U.S. scientists ...
Global networks must be redesigned, professor says
The increasing interdependencies between the world's technological, socio-economic, and environmental systems have the potential to create global catastrophic risks. We may have to redesign global networks, concludes Professor ...
Vast systems of ancient caverns on Mars may have captured enormous floodwaters
(Phys.org)—An international research team led by the Planetary Science Institute has found evidence that indicates that approximately 2 billion years ago enormous volumes of catastrophic flood discharges ...
Trigger for explosive volcanic eruptions identified
Scientists from the University of Southampton have identified a repeating trigger for the largest explosive volcanic eruptions on Earth.
New evidence argues against prehistoric extraterrestrial impact event
(Phys.org) -- Evidence used to support a possible extraterrestrial impact event is likely the result of natural processes, according to a new collaborative study led by U.S. Geological Survey scientists.