Does ‘Dry January’ keep pot use low at year’s start?

Marijuana use is lowest at the beginning of the year. Researchers think New Year's resolutions may play a role.

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drugs seasons marijuana health-and-medicine

Why snow days are becoming increasingly rare in the UK

Since 1979, the average number of snow days has fallen by about five per decade.

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climate-change seasons global-warming winter snow cold-weather jet-stream atmospheric-pressure

Climate change is making autumn leaves change colour earlier – here's why

Warmer temperatures cannot increase the amount of carbon deciduous trees absorb in each growing season, a new study suggests.

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climate-change seasons trees photosynthesis carbon-dioxide-co2 carbon-cycle autumn autumn-leaves

COVID could boost risks for seasonal affective disorder

An expert explains seasonal affective disorder and why this year could be especially tough. She also outlines steps you can take to feel better.

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depression light emotions featured health-and-medicine seasonal-affective-disorder

Americans’ odds of getting pregnant may peak in late fall

North Americans are most likely to succeed in getting pregnant in late November and early December, especially if they live in the US South.

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fertility pregnancy seasons united-states health-and-medicine

As COVID-19 cases rise again, how will the US respond? Here's what states have learned so far

States have been experimenting with more targeted approaches to slow the coronavirus's spread. Two strategies stand out.

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health covid-19 coronavirus seasons testing new-york contact-tracing states political-leadership governor

How can smoke from West Coast fires cause red sunsets in New York?

Last week, much of the Midwest and eastern US experienced hazy skies and red sunsets. The cause was smoke transported from the Western US by the jet stream and spread as far as Boston and even Europe.

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atmosphere pollution wildfires smoke sun fire jet-stream fire-season

How animals are coping with the global 'weirding' of the Earth's seasons

New research on marmots in the US reveals how the topsy-turvy seasons are causing havoc among wildlife.

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climate-change seasons extreme-weather phenology north-america small-mammals

What makes a 'wave' of disease? An epidemiologist explains

There's no scientific definition for a wave of disease – and no evidence that the original onslaught of coronavirus in the US has receded much at all.

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influenza infectious-diseases epidemiology covid-19 coronavirus pandemic sars-cov-2 herd-immunity epidemics 1918-flu-pandemic iran seasonal-flu waves second-wave pandemic-flu seasonality coronaviruses

Hurricane season: are affected countries ready to face storms on top of coronavirus?

Ccoronavirus has put emergency responders and resources under extreme pressure all over the world just as the hurricane season approaches.

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coronavirus us atlantic-hurricane-season