1. We Charted Arctic Sea Ice for Nearly Every Day Since 1979. You’ll See a Trend. Interactive, Yesterday

    Arctic sea ice has been in a steep decline since scientists started using satellites to measure it 40 years ago. And the 10 lowest ice extents have all been recorded since 2007.

  2. Listen to ‘The Daily’: Hurricanes, Humans and Climate Change Podcasts, Yesterday

    As Maria tears apart the Caribbean, leaders in the region say that recent storms have created a humanitarian crisis — and that humans are to blame.

  3. Building a Better Coral Reef Climate, September 20

    As reefs die off, researchers want to breed the world’s hardiest corals in labs and return them to the sea to multiply. The effort raises scientific and ethical questions.

  4. How Can U.S. States Fight Climate Change if Trump Quits the Paris Accord? Climate, September 20

    Fourteen states have vowed to uphold the Paris climate pact with or without the federal government, and a new analysis suggests their efforts are having an impact.

  5. San Francisco Chefs Serve Up a Message About Climate Change Dining, September 20

    Karen Leibowitz and Anthony Myint, who started Mission Street Food, have new ideas for the Perennial, their restaurant that promotes sustainability.

  6. Islands Seek International Funding for Hurricane Recovery Climate, September 19

    In a special United Nations session, leaders of islands battered by hurricanes made worse by climate change appealed to wealthy countries for aid.

  7. Climate Change Is Complex. We’ve Got Answers to Your Questions. Interactive, September 19

    We know. Global warming is daunting. So here’s a place to start: 17 often-asked questions with some straightforward answers.

  8. U.S. Governors at U.N. Assembly: ‘You Have Allies’ on Climate Change Climate, September 18

    As world leaders gather at the United Nations for the world body’s annual General Assembly, a group of American state governors is taking an increasingly high-profile role on climate change.

  9. The Real Unknown of Climate Change: Our Behavior Science, September 18

    Scientific predictions about Earth’s sensitivity to greenhouse gases have generally held up. But no one can predict how much more carbon pollution people will choose to pump out.

  10. Trump Adviser Tells Ministers U.S. Will Leave Paris Climate Accord Climate, September 18

    Gary D. Cohn, the White House economic adviser, said at the United Nations that the Trump administration would pull out of the Paris deal unless it was revised.

  11. Witness a Changing Amazon Video, September 18

    Visit a reserve in the remote central Amazon jungle, where researchers are shedding new light on how stronger, more frequent storms are driving major changes in the forest.

  12. Jellyfish Seek Italy’s Warming Seas. Can’t Beat ’Em? Eat ’Em. Foreign, September 17

    With climate change, jellyfish are booming in the Mediterranean, to the point that researchers say there may be little to do but to live with them.

  13. British Press Watchdog Says Climate Change Article Was Faulty Climate, September 16

    The Mail on Sunday was forced to issue a note saying an article asserting that U.S. researchers had manipulated data was inaccurate.

  14. From Heat Waves to Hurricanes: What We Know About Extreme Weather and Climate Change Interactive, September 15

    A string of extreme events has brought new focus to a familiar question: Is climate change to blame?

  15. Congress and Climate Change Letters, September 15

    Senator Sheldon Whitehouse describes how Congress is beholden to the fossil fuel industry.

  16. After the Storm Op Ed, September 15

    ... came the superstorms.

  17. Harrowing Storms May Move Climate Debate, if Not G.O.P. Leaders National, September 14

    Political leaders say the politics of climate change have been steadily shifting, as extreme weather makes the impact of carbon pollution more vivid.

  18. Climate Change Threatens the World’s Parasites (That’s Not Good) Science, September 13

    As many as one in three parasite species may go extinct in the next century, a new study finds, which is not cause for celebration.

  19. Fire on the Mountain: 2 Forests Offer Clues to Yellowstone’s Fate in a Warming World Climate, September 13

    Increasingly frequent wildfires fed by a warming climate could turn the park’s dense forests into sparser woodlands.

  20. Trump’s Folly Op Ed, September 13

    The president and his E.P.A. secretary miss a good opportunity for the nation by ignoring the threat of climate change.

  21. Top White House Official to Discuss Climate Change at U.N. Climate, September 12

    Gary D. Cohn, the White House economic adviser, has invited climate and energy ministers to a breakfast in New York as part of the annual United Nations meeting.

  22. Why Getting the Power Back On in Florida Could Take Weeks Climate, September 12

    Irma has left up to 15 million people in Florida without electricity. Restoring service could be the most complex operation of its kind in United States history.

  23. It’s the Right Time to Talk About Climate Change Letters, September 12

    Readers call for a repudiation of the Trump administration’s “willful disregard” of climate change and other “inconvenient truths.”

  24. What Could We Lose if a NASA Climate Mission Goes Dark? Magazine, September 12

    Researchers are racing to replace the pioneering Grace satellites, which are threatened by both dying batteries and Trump-era budget cuts.

  25. The Damage Wrought by Hurricane Irma Letters, September 11

    Readers discuss how Irma brought out the good in people, how reporters risked their lives, global warming and the Mexican quake.

  26. Hurricane Irma Linked to Climate Change? For Some, a Very ‘Insensitive’ Question Climate, September 11

    Scientists are concerned that Trump administration officials are sidestepping questions about climate change after two major hurricanes.

  27. Pope Criticizes Climate Change Deniers and Trump on DACA Foreign, September 11

    On his flight back to Rome, Pope Francis said climate change deniers need to consult scientists and urged President Trump not to end DACA.

  28. Conspiracies, Corruption and Climate Editorial, September 11

    It’s not just Rush Limbaugh: Know-nothings are running America.

  29. Weather Channel Goes Into Overdrive Covering Back-to-Back Hurricanes Business, September 9

    In the network’s Atlanta newsroom, there is free pizza, lots of energy and scant mention of climate change.

  30. President Trump’s War on Science Editorial, September 9

    The White House and its lackeys in certain federal agencies are censoring scientific inquiry that could inform the public and government policy.

  31. ‘The Lungs of Our Region Are on Fire:’ Wildfires Exact a Punishing Toll on the West Express, September 8

    Times readers share personal stories about the wildfires sweeping across arid lands.

  32. Conservationists See a Hurricane Risk: Florida’s Exotic Pets Could Escape Climate, September 8

    With Hurricane Irma fast approaching Florida, wildlife organizations are concerned that captive, nonnative wildlife could break loose.

  33. More Than 40 Sites Released Hazardous Pollutants Because of Hurricane Harvey Interactive, September 8

    In the Houston area, air pollution, flooded toxic waste sites and reports of oil spills after the storm have residents and environmental groups concerned.

  34. Florida Is Due for a Reckoning. Will Irma Be It? Op Ed, September 8

    Despite its vulnerability to hurricanes, the state continues to encourage growth and building in dangerous places.

  35. Christine Todd Whitman: How Not to Run the E.P.A. Op Ed, September 8

    The agency is too important to treat like a reality TV show. People’s lives and our country’s resources are at stake.

  36. Why Hurricane Irma Could Hurt, a Lot: Much Lies in Harm’s Way Climate, September 7

    South Florida has grown at a breathtaking pace, making big storms potentially more dangerous and costly.

  37. An Enormous, Urgent Task: Hauling Away Harvey’s Debris National, September 6

    After the storm, clearing all the mounds of rubbish is a top priority. Experts warn of the task’s complexity, and the need to meet environmental standards.

  38. First Harvey, Then Irma and Jose. Why? It’s the Season. Climate, September 6

    Experts say that with conditions just right in the tropical Atlantic, late summer and early fall is prime time for hurricanes.

  39. What Climate Scientists Want You to See in the Floodwaters Op Ed, September 2

    Hurricane Harvey offers an opportunity to understand what’s happening to the climate and how we can mitigate future disasters.

  40. We Don’t Deny Harvey, So Why Deny Climate Change? Op Ed, September 2

    We know there’s a link, and there are things we can do to combat global warming.

  41. In Hurricane Harvey’s Wake, We Need a Green ‘New Deal’ Op Ed, August 31

    The storm’s victims need all the help we can provide. But this calamity should make us reconsider our broader social contract.

  42. New Hazard in Storm Zone: Chemical Blasts and ‘Noxious’ Smoke National, August 31

    A series of explosions rocked a plastics plant near Houston that has been identified as one of the most hazardous in the state.

  43. Hot Spots in a Freezing Ocean Offer Lessons in Climate Change Science, August 31

    Scientists dropped heated panels into the seas off the Antarctic coast. Some microscopic species thrived; others suffered.

  44. Beyond Houston, a World Awash Editorial, August 31

    People from Britain to Bangladesh are paying a price for unabated climate change.

  45. A Texas Farmer on Harvey, Bad Planning and Runaway Growth Op Ed, August 30

    The complex interplay between nature and the world we have created exploded in Houston.

  46. Trump in Texas: Words vs. Actions Letters, August 30

    Readers criticize the president’s policies, which they say would result in more catastrophic weather events.

  47. Canadian Town, Isolated After Losing Rail Link, ‘Feels Held Hostage’ Foreign, August 30

    The subarctic town of Churchill has been stranded since May, when floods washed out its only link to the south. And the rail’s American owners don’t want to fix it.

  48. You Fix It: Can You Stay Within the World’s Carbon Budget? Interactive, August 29

    Staying within the earth’s carbon budget will be tough — especially since we’ve blown through more than half of it already.

  49. Harvey, the Storm That Humans Helped Cause Opinion, August 29

    Storms are more damaging than in the past, and climate change is at least partly to blame.

  50. Hurricane Harvey Was No Surprise Opinion, August 28

    Weather that falls outside our historical experience is becoming more likely. We need to acknowledge and plan for that.

  51. Tree-Eating Beetles March Northward, Lured by Milder Winters Climate, August 28

    Historically, southern pine beetles were largely unheard-of north of Delaware, but the Northeast’s winters are no longer cold enough to kill them off.

  52. How Hurricane Harvey Became So Destructive Climate, August 28

    Scientists say warm waters and stagnant winds in the upper atmosphere built a monster of a storm. Whether climate change is to blame is less clear.

  53. The Relationship Between Hurricanes and Climate Change U.S., August 25

    The links between hurricanes and climate change are not simple. Some things are known with growing certainty. Others, not so much.

  54. Russian Tanker Completes Arctic Passage Without Aid of Icebreakers World, August 25

    The Christophe de Margerie, built to crush ice in its path, completed the journey from Norway to South Korea in just 19 days.