heat

Conventional solar technology soaks up rays of incoming sunlight to bump out a voltage. Strange as it seems, some materials are capable of running in reverse, producing power as they radiate heat back into the cold night sky.  A team of engineers in Australia has now demonstrated the theory in action, using the kind of technology commonly found in night-vision goggles to generate power.So far, the prototype only generates a small amount of power, and is probably unlikely to become a competitive source of renewable power…

Article content Jimmy Butler scored 17 of his 41 points in an epic third-quarter uprising to help the host Miami Heat rally for a 118-107 victory over the Boston Celtics in Game 1 of the Eastern Conference finals on Tuesday night. Article content Butler also contributed nine rebounds, five assists, four steals and three blocked shots to help Miami overcome a 13-point, second-quarter deficit. The Heat outscored Boston 39-14 in the third quarter to seize a 93-76 lead entering the final stanza. Tyler Herro registered 18…

Then there was a 2018 study that analyzed data from more than 500 publications and estimated that biocrusts “will decrease by about 25–40 percent within 65 years, due to anthropogenically caused climate change and land-use intensification.”Finger-Higgens’s “paper offers a little more realism” than these experimental studies, says Bowker. It shows “something that unfolded over an extended period of time in a natural ecosystem.”So is stripping the desert of its crusty skin really a big deal? If you have spent time in the…

The buildup of bacteria deep in our teeth can cause infections in difficult-to-reach areas, and scientists at the Indian Institute of Science have developed a set of tiny cleaning robots they believe are up to the task. The nano-sized machines can be steered with a magnetic field into microscopic channels in the teeth and kill bacteria with heat, offering a safe and potent way to improve the success of standard root canal treatments.The robots came about through the team's pursuit of new and improved ways to tackle the…

The comic book adaptation has been cinema’s favorite genre for over 20 years, and with good reason. It’s gifted the world with countless critical and commercial favorites, but on the other side of the coin, you occasionally end up with total and utter failures like Whiteout. Based on the four-episode 1998 run written by The Old Guard‘s Greg Rucka, it would take over a decade for the feature film version to arrive, only for it to be swiftly beaten into submission by critics and audiences. Armed with a fairly modest $35…

Spatial map depicting mean geothermal heat flow in and around Greenland derived from machine learning results. Heat anomalies appear off the coast of the capital area in the southwest, which might be interesting in relation to harvesting geothermal energy. In general, though, the heat flow from beneath Greenland is lower than previously estimated. Credit: Colgan and Wansing, 2022 In our understanding of global geothermal heat…

Air temperature anomalies across the continental United States and Canada on June 27, 2021, when the heat intensified and records started to fall. Red areas are where air temperatures climbed more than 27°F higher than the average for the same day. Credit: NASA Earth Observatory Last summer, a deadly wave of heat struck the Pacific Northwest, causing temperatures to soar more than 30 degrees Fahrenheit above normal and…

Nearly one in eight people on Earth are enduring a relentless, lethal heat wave that is stretching into its third week. Triple-digit temperatures are continuing to bake swaths of India and Pakistan, a region home to 1.5 billion people. Extreme heat has also scorched Bangladesh and Sri Lanka in recent weeks. For India, this past April was the hottest in 122 years and followed the hottest March on record. For Pakistan, it was the hottest April in 61 years. Jacobabad, Pakistan, already one of the hottest cities in the…

Researchers investigating the effects of stress on accumulations of toxic brain proteins linked with dementia have discovered a surprisingly counter-intuitive mechanism. A specific cellular stress response involving heat shock proteins has been found to reverse the build-up of these toxic proteins and future research will now look for a way to therapeutically trigger this mechanism.Many neurodegenerative diseases such as Alzheimer’s and Parkinson’s are characterized by the accumulation of certain proteins in the brain.…

Low levels of coral bleaching in Hawaii, 2015. Credit: Greg Asner, Center for Global Discovery and Conservation ScienceResearch findings could help manage and build a resilient network of coral reefs.As the world’s ocean temperatures rise, so will the number of cases of coral bleaching. When corals bleach, they become more vulnerable to other stressors such as water pollution. Many reefs, however, are home to corals that thrive despite warming oceans. Unraveling the complex issue of coral bleaching and its impact on their…