Smallholder agriculture in southern Ethiopia. Smallholder farmers are particularly vulnerable to food insecurity.
According to the UN, world hunger is rising for the first time in 15 years. The answer is not only growing more food, but also buffering small-scale farmers against climate change and armed conflicts.
Wildfire creates an orange glow in a view from a hilltop Oct. 13, 2017, in Geyserville, California.
AP Photo/Marcio Jose Sanchez
Wildfires in California have triggered a public health emergency. One threat is smoke inhalation: Some air readings have registered pollution levels comparable to bad air days in Beijing or Mumbai.
Younger Americans tend to be comfortable relying on ride services and foregoing car ownership.
Using ride-hailing services full-time would mean avoiding the hassles of owning a car. But it could cost less, too – depending on how you value your time otherwise spent behind the wheel.
Grid operators set the prices for energy markets and are structured to take the lowest prices – a disadvantage for coal and nuclear power.
Two moves by the Trump administration signal a dramatic shift in energy policy to favor coal and nuclear, but markets forces and legal challenges mean changes could take years.
EPA Administrator Scott Pruitt is an unabashed ally of the fossil fuels – industry his agency is supposed to regulate.
AP Photo/Gene J. Puskar
The Trump administration is committed to deregulating industry, as it's done with the EPA Clean Power Plan. But a historian shows how regulations have actually benefited both industry and consumers.
Big Sur coastline.
Ashley Spratt, USFWS
For 50 years California has used laws and policies to manage development alongs its 1,100-mile coastline and preserve public access to the shore. Climate change will make that task harder.
TVA Kingston Fossil Plant in Tennessee, site of a 1.1 billion gallon spill of coal ash slurry in 2008, photographed on March 28, 2012.
Rural development experts say the best way to help coal communities by is investing in people, infrastructure and a clean environment. Instead, President Trump's budget cuts programs in these areas.
Demolishing the coal-fired R.E. Burger Power Station in Shadyside, Ohio, July 29, 2016.
Energy Secretary Rick Perry has proposed to reward coal plants for stockpiling fuel onsite – allegedly making the power system more reliable. Two economists give this idea a failing grade.
Under the El tracks, downtown Chicago.
New research shows that noise pollution in US cities is concentrated in poor and minority communities. Beyond regulating airplane noise, the US has done relatively little to curb noise pollution.
Who’s afraid of rising sea levels?
David Goldman/AP Photo
Europeans are, on average, more likely than Americans to say they fear climate change. What explains the gap?
Rhesus monkeys on Cayo Santiago.
Puerto Rico's Cayo Santiago Research Station has been a world-famous site for primate studies since 1938. Now scientists are working to save its staff and rhesus monkey colony after Hurricane Maria.
Interior Secretary Ryan Zinke has proposed shrinking Oregon’s Cascade-Siskiyou National Monument and allowing more public access and road maintenance.
Environmental law and natural resource experts respond to Interior Secretary Ryan Zinke's proposals to shrink four national monuments and allow logging, fishing and other activities in six more.
Public lands along the south fork of the Snake River in southeastern Idaho.
Interior Secretary Ryan Zinke calls himself "a Teddy Roosevelt guy," but supports many actions that critics call anti-conservation, such as shrinking national monuments and fast-tracking energy projects.
Coastal wetlands are an effective first line of defense and act by slowing down storm surges and reducing flooding.
New research by scholars, conservationists and the insurance industry shows that coastal wetlands provide hundreds of millions of dollars' worth of protection from flooding, boosting the case for protecting them.
The imposition of steep duties on imported solar panel components could jeopardize thousands of jobs in the industry.
A trade spat could jack up the cost of going solar, killing jobs and obstructing efforts to do something about climate change.
Trees burn in the High Park wildfire near Fort Collins, Colorado, June 17, 2012.
Much disaster reporting simply chronicles events, but good journalism digs deeper and examines causes. Stories about Colorado wildfires have raised questions about risk, especially on fire anniversaries.
A male boreal toad waits for opportunities to mate near a Colorado mountain lake.
Frogs and toads are declining around the world, with many species on the brink of extinction. Acting in time means trying strategies without complete information about how likely they are to work.
A brown bear snags a sockeye salmon in Alaska. In warm years, red elderberries ripen early and Kodiak bears leave streams full of salmon to eat them.
Climate change is making berries ripen early in Kodiak, Alaska, luring bears away from eating salmon. This shift may not hurt the bears, but could have far-reaching impacts on surrounding forests.
Picking up the pieces in Florida after Hurricane Irma.
AP Photo/Gerald Herbert
For the first time in years, Americans are acutely aware of the perils of extreme weather, but don't expect views on climate risks to shift overnight.
Crews work to restore power and traffic lights knocked out by Hurricane Matthew, Oct. 8, 2016, in Flagler Beach, Florida.
AP Photo/Eric Gay
As Texas and Florida rebuild after Hurricane Harvey and Hurricane Irma, they should plan for future climate change and design infrastructure that can respond to and recover from extreme events.
Coal stockpile at a Milwaukee, Wisconsin power plant, 2011.
A recent study shows that large piles of coal produce measurable quantities of fine particulate air pollution within a 25-mile radius. Covering coal trains and storage piles could reduce the problem.
Satellite image on Sept. 7, 2017 shows three hurricanes: Irma in the center just north of the island of Hispaniola, Katia on the left in the Gulf of Mexico and Jose in the Atlantic Ocean on the right.
NOAA via AP
What scientists know – and don't know – about the linkage between climate change and hurricanes.
Hurricanes Harvey and Irma caused widespread power outages.
AP Photo/Eric Gay
Would putting power lines underground avoid hurricanes knocking out electricity service for millions of people? The answer is not as straightforward as it seems.
Colleen Burge counts oysters on an oyster aquaculture lease in California.
Oysters grow in seawater and filter their food from it, so how do you shield them from waterborne diseases? Scientists are working to develop strains that are resistant to a fast-spreading herpes virus.
Social media apps are becoming as important as water, food and batteries when communities face natural disasters. One key function is helping people connect with neighbors and support each other.