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E.g., 08/18/2019
E.g., 08/18/2019
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Your search has returned 1301 articles:
  • News

    The worst wildfires can send smoke high enough to affect the ozone layer

    For the first time, scientists have seen exactly how towering clouds that rise from intense wildfires launch smoke high into the atmosphere, where it can linger for months and mess with the protective ozone layer.

    Cooler air closer to Earth’s surface normally keeps smoke from rising too high. But as dozens of fires raged in western Canada and the U.S. Pacific Northwest in the summer of...

    08/08/2019 - 14:00 Climate, Earth
  • News

    Mercury levels in fish are rising despite reduced emissions

    Climate change and overfishing may be hampering efforts to reduce toxic mercury accumulations in the fish and shellfish that end up on our plates. Mercury emissions are decreasing around the globe. But new research suggests that warmer ocean waters and fishing’s effects on ecosystems can alter how much mercury builds up in seafood.

    Fishing practices increased methylmercury levels in the...

    08/07/2019 - 15:37 Climate
  • Feature

    With nowhere to hide from rising seas, Boston prepares for a wetter future

    Boston dodged a disaster in 2012. After Hurricane Sandy devastated parts of New Jersey and New York, the superstorm hit Boston near low tide, causing minimal damage. If Sandy had arrived four hours earlier, many Bostonians would have been ankle to hip deep in seawater.

    Across the globe, sea levels are rising, delivering bigger storm surges and higher tides to coastal cities. In Boston,...

    08/06/2019 - 06:00 Climate, Earth, Science & Society
  • News

    How the 5 riskiest U.S. cities for coastal flooding are preparing for rising tides

    The five U.S. cities most at risk from coastal flooding have begun to make plans for adapting to rising sea levels. Some are further along than others. Here’s where their flood resilience efforts stand:

    Miami

    Florida’s flooding risk comes not just from storms and high tides but also from water seeping up through the porous limestone that underlies much of the state. After 2017’s...

    08/06/2019 - 06:00 Climate, Earth, Science & Society
  • Editor's Note

    Why this warmer world is not just a passing phase

    In the late 1990s, three scientists published a paper charting the Earth’s temperatures over the last millennium. For the first 900 years, the trend line was the definition of boring: just little blips up and down. That changed around 1900, when the mean global temperature shot up, and kept rising.

    That now-famous trend line, dubbed “the hockey stick” because of its sharp upward...

    08/06/2019 - 05:00 Science & Society, Climate
  • Science Visualized

    A new map is the best view yet of how fast Antarctica is shedding ice

    Decades of satellite observations have now provided the most detailed view yet of how Antarctica continually sheds ice accumulated from snowfall into the ocean.

    The new map is based on an ice-tracking technique that is 10 times as precise as methods used for previous Antarctic surveys, researchers report online July 29 in Geophysical Research Letters. That offered the first comprehensive...

    08/05/2019 - 08:00 Earth, Climate
  • News

    The Arctic is burning and Greenland is melting, thanks to record heat

    The Arctic is on fire. Record-breaking temperatures and strong winds are fueling an unprecedented number of wildfires across the region this summer. In Siberia alone, hundreds of wildfires captured by satellite images July 28 spanned about 3 million hectares of land. Across Alaska, as many as 400 wildfires were burning as of mid-July. And the heat is also melting Greenland’s ice at an alarming...

    08/02/2019 - 15:52 Climate, Earth
  • News

    How today’s global warming is unlike the last 2,000 years of climate shifts

    Temperatures across 98 percent of Earth’s surface were hotter at the end of the 20th century than at any time in the previous 2,000 years.

    Such nearly universal warming, occurring in lockstep across the planet, is unique to this current era, scientists say. By contrast, other well-known cold and warm snaps of the past, such as the Little Ice Age or the Medieval Warm Period, were, in fact...

    07/24/2019 - 14:16 Climate
  • Science Stats

    Planting trees could buy more time to fight climate change than thought

    A whopping new estimate of the power of planting trees could rearrange to-do lists for fighting climate change. 

    Planting trees on 0.9 billion hectares of land could trap about two-thirds the amount of carbon released by human activities since the start of the Industrial Revolution, a new study finds. The planet has that much tree-friendly land available for use. Without knocking down...

    07/17/2019 - 09:02 Ecology, Plants, Climate
  • Science Visualized

    Night-shining ‘noctilucent’ clouds have crept south this summer

    High in the sky, sunlit wisps remain aglow even after sundown. This summer, a surprising number of such noctilucent, or “night-shining,” clouds have been spotted in the Northern Hemisphere — and, unusually, as far south as Oklahoma and New Mexico, scientists report.

    These clouds typically float in the mesosphere about 80 kilometers above Earth’s surface, and are visible at high latitudes...

    07/16/2019 - 10:00 Earth, Climate, Planetary Science