New quantum cascade lasers emit more light than heat
Northwestern University researchers have developed compact, mid-infrared laser diodes that generate more light than heat - a breakthroughs in quantum cascade laser efficiency.
What's beneath Hawaii's most active volcano?
Step away from the villages and idyllic beaches of Hawaii, and you may think you've been transported to the moon. Walking along the lava flows of the Kilauea volcano, the landscape changes from a lush tropical ...
Outsmarting nature during disasters
The dramatic images of natural disasters in recent years, including hurricanes Katrina and Sandy and the Tohoku, Japan, earthquake and tsunami, show that nature, not the people preparing for hazards, often wins the high-stakes ...
Finding a sensible balance for natural hazard mitigation with mathematical models
Uncertainty issues are paramount in the assessment of risks posed by natural hazards and in developing strategies to alleviate their consequences.
Risk is much more than a game
Wildfires and flooding affect many more people in the USA than earthquakes and landslide and yet the dread, the perceived risk, of the latter two is much greater than for those hazards that are more frequent and cause greater ...
Chilean eruption highlights risk from 'rhyolitic' volcanoes
Magma from a Chilean volcano shot through Earth's crust at around a metre (3.25 feet) per second, a speed highlighting the perils from so-called rhyolitic volcanoes, scientists reported on Wednesday.
Father-son team develops smart strategies for protection again natural disasters
(Phys.org)—Do costly seawalls provide a false sense of security in efforts to control nature? Would it be better to focus on far less expensive warning systems and improved evacuation procedures that can save many lives?
Flood risk ranking reveals vulnerable cities
(Phys.org) -- A new study of nine coastal cities around the world suggests that Shanghai is most vulnerable to serious flooding. European cities top the leader board for their resilience.
USGS: Mission accomplished for Landsat 5
(Phys.org)—Today the U.S. Geological Survey announced that Landsat 5 will be decommissioned over the coming months, bringing to a close the longest-operating Earth observing satellite mission in history. By any measure, ...
Parts of Mt Fuji 'could collapse' if fault shifts
Parts of Japan's Mount Fuji, a national symbol and key tourist attraction, could collapse if a newly-discovered faultline under the mountain shifts, a government-commissioned report has warned.
New towns going up in developing nations pose major risk to the poor
Satellite city projects across the developing world are putting an increasing number of poor people at risk to natural hazards and climate change, according to a new study from the University of Colorado Denver.
Landslide mapping in the Swiss Alps to aid in development of safe, durable infrastructure
Archived radar data from the Envisat mission are playing an important role in mapping landslides in Switzerland. The mission's vast archives continue to prove useful for mapping ground deformation.
Slab of Barrier Reef sea floor breaking off
A huge slab of sea floor near the Great Barrier Reef is in the early stages of collapse and could generate a tsunami when it finally breaks off, researchers warned Friday.
Landsat satellite sees Arizona wildfire sweep through Apache National Forest
The second largest fire in Arizona history, the Wallow Fire is graphically depicted by this Landsat image, taken June 7, which shows burning in the mountains of eastern Arizona near the border with New Mexico. ...