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New condenser makes water from air, even in hot sun
Access to clean water is a pressing issue for many people around the world. Even in areas with ample water resources, a lack of infrastructure or reliable energy means purifying that water is sometimes extremely difficult.
That’s why a water vapor condenser designed by University of Wisconsin-Madison engineers could be revolutionary. Unlike other radiative vapor condensers which can only operate at night, the new design works in direct sunlight and requires no energy input.
“Water sustainability is a global issue,” says Zongfu Yu, an associate professor of electrical and computer engineering at UW-Madison. “You can’t set out to solve the water problem without addressing energy.”
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Noise pollution affects marine life worldwide
Man-made sounds in and around the oceans stress marine life and have an impact on marine species and ecosystems by changing the underwater acoustic climate. Hans Slabbekoorn from the Institute of Biology Leiden pleads for technical solutions to mitigate problems of noise pollution. Science review paper on 4 February.
Sound is fundamental to the sensory world of marine life. Animals, from jellyfish to whales, perceive and use sound for many aspects of their daily activities. They find food and each other by listening to the surrounding soundscapes, and hunt or seek shelter guided by acoustics. Global industrialisation of the ocean has led to the rise of noise pollution through noisy human activities in and around the water. Hans Slabbekoorn, associate professor at the Institute of Biology Leiden, investigates the effects of man-made sounds: ‘Noise pollution in and around the water has led to a decline in the presence of natu
A bifacial perovskite/silicon tandem prototype being field-tested at King Abdullah University of Science & Technology in Saudi Arabia. The new technology.
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Image from the Expedition. Credit: Joan Costa, CSIC It’s a deep-sea mystery that has confounded ocean scientists for years: What causes the deeper zones of the ocean to sequester larger amounts of carbon than the lighter, more shallow regions?
Thanks to a team led byCarlos Duarte, Distinguished Professor of Marine Science and theTarek Ahmed Juffali Research Chair in Red Sea Ecology at KAUST, we now have an answer: a much larger biomass exists than was previously estimated.
Processes taking place in the deepest depths of the ocean act as a pump, taking twice as much carbon out of the atmosphere as previously thought.