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Articles on Biology

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The majestic St. Lawrence River, a jewel of economic, historical and environmental importance, reminds us of the need to preserve this essential ecosystem. (Ludovic Pascal)

Oxygen in the St. Lawrence Estuary is decreasing – and having a major impact on small animals living there

The waters of the St. Lawrence are running out of breath and bottom-dwelling organisms are already feeling the effects. Here’s how ecosystems are reacting.
Temperature sensitivity makes western fence lizards vulnerable to climate change. Greg Shine/BLM

Climate change is already forcing lizards, insects and other species to evolve – and most can’t keep up

From dark dragonflies becoming paler to plants flowering earlier, some species are slowly evolving with the climate. Evolutionary biologists explain why few will evolve fast enough.
Rocky Mountain fires leave telltale ash layers in nearby lakes like this one. Philip Higuera

What 2,500 years of wildfire evidence and the extreme fire seasons of 1910 and 2020 tell us about the future of fire in the West

As the climate warms, devastating fires are increasingly likely. The 2020 fires pushed the Southern Rockies beyond the historical average. Is there hope for the Northern Rockies?
Teaching sex and gender more accurately can counter gender stereotypes and encourage all students to study STEM. Iurii Krasilnikov/iStock via Getty Images Plus

Trans students benefit from gender-inclusive classrooms, research shows – and so do the other students and science itself

‘Don’t Say Gay’ bills claim to use science to justify a binary definition of sex based on certain traits. But the biology of sex and gender is not so simple.

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