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SAN FRANCISCO – Tracking and avoiding the growing debris field in low Earth orbit was clearly on the minds of speakers on the first day of the Satellite Innovation 2020 conference.
“Today, unfortunately, there is a lot of debris up there,” said Tony Gingiss, OneWeb Satellites CEO. “We have to be able to track it and avoid it. But fundamentally, we also have to change the landscape in terms of … the responsibilities of the parties operating up there to actually make sure that we’re not creating more debris.”
As OneWeb, SpaceX and Amazon begin as a group to send tens of thousands of satellites into broadband constellations, industry and government officials acknowledge the growing risk of collisions.
The Federal Communications Commission is considering changing its rules for orbital debris mitigation, which have been in force since 2004.
“It’s pretty clear that the large constellation operators recognize that they’re going
Simultaneous heatwaves and droughts are becoming increasingly common in western parts of the Unites States, according to a new study led by researchers from McGill University. Periods of dry and hot weather, which can make wildfires more likely, are becoming larger, more intense, and more frequent because of climate change.
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In a study published by Science Advances, the researchers analyzed heat and drought events across the contiguous United States over the past 122 years. They found that combined dry and hot events have not only increased in frequency, but also in size geographically. Where such events were once confined to small parts of the United States, now they cover whole regions, such as the entire west coast and parts of the Northeast and Southeast.
“Dry-hot events can cause large fires. Add wind and a source of ignition, and this results in ‘megafires’ like the 2020 fires across the west
In recent years — and 2020 is no exception — parts of the Pacific Northwest that are typically too wet to burn are experiencing more frequent, severe and larger wildfires due to changes in climate. New research from Portland State University found that while the increased wildfire activity is causing widespread changes in the structure and composition of these mid-to-high elevation forests, the new landscapes are also likely more resilient to projected upward trends in future fire activity and climate conditions.
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The study, led by PSU graduate student Sebastian Busby, examined temperate forests that burned expansively, severely and repeatedly between 2003 and 2015 in the central Cascade Range of Oregon and Washington. On Mt. Adams, these wildfires included the 2008 Cold Springs, 2012 Cascade Creek and 2015 Cougar Creek fires. On Mt. Jefferson, the wildfires included the 2003 Booth and Bear Butte Complex, 2007 Warm Springs Area Lightning Complex and