Stories by Chelsea Harvey

Sitting atop a deep canyon, Denman Glacier could be a weak point in the Antarctic Ice Sheet

The likelihood of extreme events today is being underestimated, new research suggests

Herds of reindeer or other species could help pack down snows to protect permafrost

Curtailed travel could temporarily lower emissions, but increased home energy use might offset that

Scientists expect to see changes in the timing, location and severity of disease outbreaks as global temperatures rise

The shift, which may be linked to climate change, can affect sea levels and the distribution of heat and nutrients

While the changes are not yet permanent, they provide a glimpse into a possible future

Estimates of methane coming from natural sources have been too high, shifting the burden to human activities

The combination of day and night extreme heat will only get more frequent—and hotter—in the future

The combination of climate change, habitat loss and pesticide use is leading to local extinctions of bee species

Climate change may in part be spurring the acceleration, which could change how heat and nutrients are pushed around the oceans

Some climate scientists argue using such scenarios could make climate targets sound less achievable than they are

Ozone-eating chemicals are also potent greenhouse gases, accounting for up to half of the Arctic’s temperature rise

Because climate change is shifting ocean ecosystems, sanctuaries need to shift with them, experts argue

Rising temperatures and increased deforestation increase the risks for CO₂-emitting fires

Over the first leg of the trip, scientists say they are already learning how much humans have altered the polar region

The 2010s brought major climate science advances, but researchers still want to pin down estimates of Arctic melt and sea-level rise

A surge in glacial ice flow that created an “ice stream” is a concern for Greenland and Antarctica as well

Weather radar data shows that many North American species are shifting their spring migration by two days each decade

The bedrock below Thwaites and other glaciers is conducive to runaway melting that would dramatically raise sea levels

Scientists found the fingerprints of warming on heat waves, torrential rains and other major events in 2018

Even models in the 1970s accurately predicted the relationship between greenhouse gas emissions and temperature rise

The recent increase in emissions from fossil fuel burning did slow down, but huge cuts are needed to avoid dangerous warming

Draining meltwater could lubricate the base of the ice, speeding its flow and hastening sea-level rise