A third of Americans now live in wildfire risk zones

Favorable conditions for wildfires are becoming more frequent in the western US

A new study of the American West shows that climate change is driving more days that are hot, dry, and windy—the perfect conditions for deadly wildfires.

More extreme heat days are putting human health at risk in both the short and long term

America is generally experiencing more frequent extreme heat days, over a longer period, in certain parts of the country. The heat-related death toll is rising, and beyond those direct deaths, extreme heat can also have troubling ripple effects including elevated violence and decreased productivity.

Volunteer fire departments are declining as communities shift to career staff

As populations increase and emergency calls grow more complicated, many communities are replacing volunteer fire departments with full-time professional staff—a change that boosts response capacity and reliability but also significantly raises costs.

How the California wildfires are impacting wildlife

The deadly 2025 Eaton and Palisades Fires in California have devastated neighborhoods, forested canyons and chaparral—a type of shrubland. In addition to taking dozens of human lives and displacing thousands, the fires destroyed countless habitats and displaced many species. See the unfortunate effects of the flames on wildlife populations, including birds, snakes, wildcats, and fish.

Volatile chemical contamination can last in burn areas long after urban wildfires

Lead, arsenic, asbestos, and other chemicals have been found trapped in smoke-exposed rugs, couches, pillows, and other furniture that appeared otherwise undamaged from the 2025 LA wildfires. The gradual release of these substances has produced dangerous indoor air concentrations and contributed to increased emergency room visits and abnormal blood tests.

Homes in areas increasingly prone to natural disasters often aren't covered by private insurance

Instead, they're often covered under insurance plans of last resort, known as FAIR (Fair Access to Insurance Requirements) plans. However, as more and more homes become covered by FAIR, the program is facing strain. This interactive visual helps explain the new problems FAIR is facing.

How fighting wildfires works

Firefighters use sophisticated strategies to control wildfires that sometimes cover thousands of acres. This video breaks down how teams set up fire lines to isolate the fires by cutting down brush and trees around the existing fire, among other...

Fireworks-related ER visits are on the rise—in 2024, they increased by 52% as compared to the prior year.

Amazon fires: Causes, impact, and prevention strategies

This article explores the issue of rampant fires in the Amazon rainforest, detailing their root causes, devastating impacts, and potential prevention methods. The Amazon rainforest's unique biodiversity and climate conditions make it unsuitable for...

Fireworks-related ER visits in 2024 increased by 52% as compared to the prior year

In 2023, there were 9,700 such injuries, but the number was 14,700 in 2024, according to analysis from the Consumer Product Safety Commission. Personal use of fireworks grew significantly during the pandemic, in part due to cancellations of public display shows, and that use has apparently continued—and prompted more injuries. What's more, the Census Bureau indicates that firework imports increased by around 19% between 2023 and 2024.

Poison ivy will likely become both larger and more resilient due to climate change.

Visualizing obesity rates across the US

Nearly 70% of adults in the US are either overweight or obese, rates that have tripled over the last 60 years. Severe cases have risen tenfold during this period. Factors like location, income level, and demographics contribute to various obesity levels across the US. Visualize the statistics with this article and chart series.

Why car insurance rates are skyrocketing

The average annual premium for auto insurance coverage in the US rose 26% in 2024, and rates are only expected to increase. The rate hikes aren’t simply a result of more people getting into crashes. This video explores how a lack of trained auto mechanics, a tighter supply of used vehicles, record healthcare bills, and litigation are contributing to higher monthly insurance bills.

All kinds of people follow the FIRE movement

Amy X. Wang, the assistant managing editor of The New York Times Magazine, looked at the people behind the growing FIRE movement in a recent podcast episode.

One-third of early- and mid-career workers have considered quitting due to stress

In 2024, around half of all full-time employees polled by the National Alliance on Mental Illness reported experiencing burnout at their jobs. Around a third of all employees ages 18 to 49 had considered quitting their jobs due to workplace stress.

Zoning laws determine what can be built—and where—in every American community

Local governments use zoning to regulate land use. About 75% of residentially zoned land in American cities is designated for single-family homes only—a restriction that some experts blame for increasing housing costs and reducing affordability.

Land use changes in Connecticut may have helped to enable Lyme's leap into humans

Forest clearing and fragmentation, alongside suburban development, may have contributed to the emergence of Lyme disease in humans in the 1970s. Those changes brought mice, carriers of the disease, into greater contact with people. Climate change is also facilitating Lyme's spread as tick populations survive milder winters and move northward.

Five hazards of human spaceflight

From space radiation to isolation, humans struggle when it comes to traveling and living in space. What does this mean for long-term spaceflight? This hour-long podcast episode attempts to answer that question while detailing five major spaceflight hazards.

The Office of Air and Radiation oversees America's clean air and climate programs

The office develops and enforces national standards for air quality, vehicle emissions, and radiation protection. In 2025, the EPA announced the closure of two key divisions under the office responsible for regulating climate and air pollution: the Office of Atmospheric Protection and the Office of Air Quality Planning and Standards.

Seasonal allergies don't always show up in childhood

The human immune system may become sensitized to pollen and develop an allergic reaction to it after prolonged exposure. Other triggers for new seasonal allergies may include exposure to new environments and changing climate conditions that affect allergy season length and conditions for various pollens.

Invasive species are the third biggest threat to Earth's biodiversity

According to the World Wildlife Fund's Living Planet Report 2020, changes in land and sea use account for about half of all recorded threats to the diversity of the planet's species. Species overexploitation is the second-largest proportional threat at 24%, while invasive species make up 13%.

Cancer rates are on the rise among GenXers and Millennials

Cancer rates are rising among Gen X and Millennials, with more cancer diagnoses being made in their 30s and 40s than previous generations. Factors such as prenatal exposures, environmental toxins, and lifestyle choices may contribute to this trend. Memorial Sloan Kettering Cancer Center's experts discuss these issues, exploring how these insights could reshape cancer risk understanding.

When humans discovered fire

Fire has proven crucial for the development of human civilization, but there was a time when our hominin ancestors could not make effective use of it. This article traces the major milestones in humanity's journey with fire based on evidence from...

In 2023, Native Americans had the lowest life expectancy at birth among all racial and ethnic groups

Native Americans and Alaska Natives face significant health disparities linked to chronic underinvestment in reservation health infrastructure, poverty, and multigenerational psychological harm—often called historical or inherited trauma.

The total cost of weather and climate disasters from 1980 to 2024 is almost $3T

The NOAA’s Office of Coastal Management tracks the cost of damage, deaths, and other key statistics related to hurricanes and weather disasters. In 2024, there were 27 billion-dollar disasters, each averaging $1.2B more in damage than the prior five-year average.

A nearby super volcano poses an even greater risk to Italy than Vesuvius

The Campi Flegrei supervolcano, with over half a million residents nearby, may be the region’s true threat. This BBC short shows how scientists monitor Campania’s volatile geology—and why people remain drawn to the landscape despite the danger.

The use of fungi to detoxify land and water—a process known as mycoremediation—has been used to clean up natural resources affected by the 2025 California wildfires.

As of 2024, approximately 44% of Americans support fracking

This makes the method less popular than carbon-free forms of energy production, such as solar, wind, and nuclear power, but more popular than coal mining. Support for fracking increased 7% from 2020 to 2024, primarily due to increased support from Republicans and older Americans.

Louisiana's 'Cancer Alley' is infamous for having some of the highest industrial pollution, toxic air emissions, and cancer risks in the US.

Before writing 'Walden,' transcendentalist Henry David Thoreau nearly burned down his hometown with a campfire that grew out of control.

Learn how your body is, scientifically, like a firework with its own slow, controlled burn.

US housing costs have risen by roughly 175% between 1991 and 2026—but a growing number of Gen Zers are becoming homeowners anyway. In 2025, 4% of homebuyers were Gen Z, up from 3% the year before.

An investigation suggests a Scottish island became awash in forever chemicals via seafoam and seaspray—raising questions about what that means for the safety of other coastal areas.

Human-to-human transmission of hantavirus remains extremely rare, so the 2026 hantavirus cruise ship outbreak doesn't mean we're facing a COVID-style pandemic risk.

View the ten deadliest tornadoes in US history.

US consumers collectively owe more than $1T to credit card companies—almost as much as they owe in auto loans.

The deadliest aspect of volcanic eruptions is often not lava, but pyroclastic flows—avalanches of ash, gas, and rock that can move more than half the speed of sound.

Listen to an in-depth conversation on the links between Parkinson's disease and herbicide exposure and the challenging pace of scientific investigation.

About 12.5% of US adults experience a phobia in their lifetime, a diagnosis that hinges on the intense fear interfering with daily life and persisting for at least six months.

While El Niño moves warm Pacific Ocean waters east along the equator, La Niña moves them west, shifting where rainfall will become more common for months.

44% of Americans say they pray at least once a day—discover how your state's religiosity stacks up against the rest of the country.

Chaos theory—informally known as the butterfly effect—is the reason why weather forecasts are presented with probabilities rather than certainties.

Electrical grids worldwide must double their power delivery capacity by 2050 to meet surging demand from AI and electric vehicles.

Domino's Pizza's 30-minute delivery guarantee was responsible for the chain's 1980s surge, but it was discontinued after the company was found liable for delivery driver accidents.

The boiling temperature of water decreases with increasing elevation because the molecules need less energy to overcome the lower atmospheric pressure associated with thinner air.

The United States is one of only around two dozen countries with a fully federal system of government, in which power is divided between national and state governments.

Explore an interactive map built from more than 100,000 survey responses on where people find joy in their lives

Astronauts have repaired genetic damage in space using CRISPR—a molecular tool that can make precise changes to DNA and is used in single-celled organisms to attack invasive viruses.

In 2018, 26-year-old missionary John Allen Chau was killed by tribesmen after attempting to reach and evangelize on India's isolated North Sentinel Island

Gerrymandering works through two techniques: cracking opposing voters across districts to dilute their power, and packing them into a few to waste their votes in lopsided majorities.