Author Archives: Jeff Tollefson
U.S. Environmental Group Wins Millions to Develop Methane-Monitoring Satellite
The Environmental Defense Fund is working with researchers at Harvard University on the probe
– Read more on ScientificAmerican.com
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Latest U.S. Weather Satellite Highlights Forecasting Challenges
Researchers begin to tackle the technical obstacles to incorporate observations from space into weather models
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China Declared World’s Largest Producer of Scientific Articles
International competition is increasing, but the United States remains a scientific powerhouse
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Climate Scientists Unlock the Secrets of Blue Carbon
Results from a soil survey could bolster efforts to monitor and protect wetlands around the globe
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U.S. Government Report Says Climate Change Is Real, and Humans Are to Blame
Conclusions of climate-change science analysis are at odds with U.S. President Donald Trump’s policies
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Controversial Chairman of U.S. House Science Committee to Retire
Representative Lamar Smith, a Republican from Texas, will not run for re-election in 2018
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EPA to Bar Scientists It Funds from Serving on Advisory Boards
The U.S. Environmental Protection Agency says the policy would address potential conflicts of interest, but scientists raise alarms
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Trump Picks Weather Company Chief to Lead Climate Agency
Barry Myers would bring private weather forecasting experience to the National Oceanic and Atmospheric Administration
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Limiting Global Warming to 1.5 Degrees Celsius May Still Be Possible
Analysis suggests researchers may have underestimated how much carbon humanity can emit, although critics disagree
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U.S. Energy Agency Asked Scientists to Scrub References to Climate Change
Researchers were told to censor descriptions of projects funded by a Department of Energy laboratory
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U.S. Science Envoy Resigns to Protest Trump Policies
Energy researcher Daniel Kammen faults president’s positions on climate change, energy and his failure to condemn white supremacists
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U.S. Government Disbands Climate-Science Advisory Committee
Panel sought to help businesses and state and local governments prepare for effects of warming
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California Scientists Push to Create Massive Climate Research Program
Effort backed by the state’s flagship universities comes as US President Donald Trump shrugs off global warming
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Fears Rise for U.S. Climate Report as Trump Officials Take Reins
Officials at the EPA are consulting global-warming sceptics as they weigh up a technical review
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Satellite Snafu Masked True Sea Level Rise for Decades
Revised tallies confirm that the rate of sea level rise is accelerating as Earth warms and ice sheets thaw
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Air Guns Used in Offshore Oil Exploration Can Kill Tiny Marine Life
Lethal effects from pulses of sound used to probe the sea floor can travel over a kilometer
– Read more on ScientificAmerican.com
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Iron-Dumping Ocean Experiment Sparks Controversy
Canadian foundation says its field research could boost fisheries in Chile, but researchers doubt its motives
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Satellite Images Reveal Gaps in Global Population Data
Algorithms help to produce precise maps of where people in developing countries live and work
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Major Report Prompts Warnings That the Arctic Is Unraveling
The polar region is warming more than twice as fast as the rest of the planet
– Read more on ScientificAmerican.com
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Mobile-Phone Signals Bolster Street-Level Rain Forecasts
Real-time analysis of wireless communications data could improve weather forecasts around the world
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How Trump Plans to Wipe Out Obama-era Climate Rules
The president has ordered the Environmental Protection Agency to reverse limits on carbon emissions from power plants
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EPA Is Pounded in Many Ways
Congress and the White House are attacking the agency’s budget, controlling data and barring advice from scientists who have EPA grants
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Giant Antarctic Ice Shelf Crack Threatens to Become a Massive Iceberg
Rift through Larsen C ice shelf has grown to 175 kilometers, and collapse of nearby ice shelves could offer a glimpse of its future
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Race to Provide Commercial Weather Data Heats Up
A movement to privatize Earth-observing satellites is gaining ground
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Perry Promises to Protect "All of the Science" at the Energy Department
Trump’s nominee for Energy secretary says that he will base decisions on "sound science"
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Trump’s Pick for Secretary of State Backs Paris Climate Accord
But Rex Tillerson, Trump’s nominee, tells senators that efforts to predict climate change are ‘very limited’
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Satellite System Tracks Glaciers’ Flow in Real Time
The system is helping scientists understand how quickly glaciers and ice sheets will melt, and how fast oceans will rise, as temperatures increase
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Researchers Baffled by Nationalist Surge
Economic woes wrought by globalization are only part of the cause.
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Antarctica’s Southern Ocean May No Longer Help Delay Global Warming
Researchers are studying the ocean’s carbon dynamics to improve predictions for sea level and temperature rise
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Flagship US Fusion Reactor Breaks Down
A design flaw introduced during a recent upgrade could keep the reactor offline for at least a year
– Read more on ScientificAmerican.com
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