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Tuesday, January 28, 2020
Here’s how climate change may make Australia’s wildfires more common

Here’s how climate change may make Australia’s wildfires more common

Australia’s fire season normally peaks in late January — but as of January 2020, wildfires have already been raging in the country for four months, especially in the east. So far, the fires have destroyed more than 1,300 homes, burned about 6 million hectares and killed at least 24 people. Those wildfires are being fueled…
Scientists Say: Firewhirl and Firenado

Scientists Say: Firewhirl and Firenado

Power Words More About Power Words ash     (in geology) Small, lightweight fragments of rock and glass spewed by volcanic eruptions. (in biology) A group of deciduous trees in the olive family that are popular in landscaping and for timber. cloud     A plume of molecules or particles, such as water droplets, that move under the action of an outside…
Climate change is bringing earlier springs, which may trigger drier summers

Climate change is bringing earlier springs, which may trigger drier summers

The early arrival of spring is often cause for celebration in northern climates. But it may come at the cost of drier, hotter days in some areas in summer. As winter wanes and leaves start to peek out from branches, trees increasingly draw water from the soil and move it into the sky — a…
Debate over signs of early life inspires dueling teams to go to Greenland — together

Debate over signs of early life inspires dueling teams to go...

Deep in the heart of Greenland, in an area recently laid bare by melting ice, lies a controversy: A rocky outcrop that some scientists say contains the oldest known signs of life on Earth. Others disagree. So a handful of scientists recently headed to the site to study it together. It’s not easy to identify…
Climate change may be why birds are migrating earlier across the United States

Climate change may be why birds are migrating earlier across the...

A large-scale analysis of bird migrations in the contiguous United States confirms what ornithologists and amateur birders already suspected: Overall, birds’ seasonal long-distance flights are happening earlier than they did a quarter of a century ago. This shift is probably due to higher temperatures, which have risen on average around half a degree Celsius per…
Flooding Earth’s atmosphere with oxygen may not have needed a triggering event

Flooding Earth’s atmosphere with oxygen may not have needed a triggering...

SAN FRANCISCO — Maybe the trigger for the rise of oxygen on Earth was nothing special. Maybe that oxidation didn’t need large tectonic shifts or the evolution of land plants. Instead, the circulation of carbon dioxide, oxygen and phosphorus between Earth’s atmosphere, oceans, rocks and the simplest of photosynthesizing life forms is sufficient to produce…
Fingerprints of climate change are increasingly appearing in extreme weather

Fingerprints of climate change are increasingly appearing in extreme weather

SAN FRANCISCO — Extremely low sea ice in the Bering Sea. Heavy rainfall in the mid-Atlantic United States. Wildfires in northeast Australia. Examinations of these and 16 other extreme weather events that occurred in 2018 found that all but one were made more likely due to human-caused climate change, scientists reported December 9 at a…
Climate-warming CO₂ emissions will hit a record high in 2019

Climate-warming CO₂ emissions will hit a record high in 2019

Despite decades of warnings from scientists about the dangers of climate change, the world is on track to hit a new record high for climate-warming carbon dioxide emissions from burning fossil fuels. By year’s end, fossil fuels will have flooded the atmosphere with about 36.8 billion metric tons of CO2 in 2019 — up from…
Dire warning: Earth may have crossed climate ‘tipping points’

Dire warning: Earth may have crossed climate ‘tipping points’

Smoke, from intense fires, rises over the Amazon rainforest in August. Joao Laet/Getty A handful of climate scientists have warned Earth may have already crossed critical climate "tipping points," potentially resulting in irreversible changes to the environment. As greenhouse gas concentrations in Earth's atmosphere continue to rise, the authors of a new commentary piece, published in…
Critics say an EPA rule may restrict science used for public health regulations

Critics say an EPA rule may restrict science used for public...

In science, transparency is typically considered a virtue. But a rule proposed by the U.S. Environmental Protection Agency, billed as a means to keep environmental regulations rooted in reproducible science, is getting pushback from the scientific community. The proposal, titled “Strengthening Transparency in Regulatory Science,” would require studies that factor into EPA rule-making to be…

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