The waters of Quitobaquito in southern Arizona have attracted diverse visitors for thousands of years.
Border wall construction through Organ Pipe Cactus National Monument in Arizona is encroaching on a site where people from many cultures have interacted for thousands of years.
A portrait from 1868 of abolitionist Harriet Tubman.
AP Photo/Sait Serkan Gurbuz
Among Tubman's most daring feats was helping slaves escape. She believed she went into trances and had visions. These, to her, were God's way of guiding her, which made her quite fearless.
One slice is never enough.
Pizza might seem like a simple food, but it's uniquely equipped to excite our brains and thrill our taste buds.
Pemerintahan Trump mendukung tambang baru di Alaska dan Minnesota yang ditentang karena dapat menghancurkan daerah tersebut.
Lithium ion batteries store large amounts of power in small battery cells that can be recharged.
Nobel Prizes in science are usually given for revolutionary ideas that change our perception of the universe. But this year's chemistry prize was awarded to inventors of a revolutionary device.
The Bingham Canyon open-pit copper mine in Utah has operated since 1903.
The Trump administration is supporting new mines in Alaska and Minnesota that many opponents say could devastate sensitive areas around them.
Actor Roger Moore poses with a martini after learning he would play the British secret agent James Bond.
To celebrate National Vodka Day, a food historian debunks myths and highlights unknown facts about one of America's favorite liquors.
Unmarried parents spend, on average, several hundred dollars less on each child annually.
Single parents and unmarried parents who live together spend less on their children than married parents.
A powerful heat-trapping gas, methane is released from the natural gas delivery infrastructure.
AP Photo/Brennan Linsley
Two energy scholars who have studied the extent of methane leaks in the oil and gas industry explain what rescinding methane emissions regulations will mean to the climate and industry.
Kebakaran hutan terjadi di area dekat Jaci Parana, negara bagian Rondonia, Brasil, tanggal 24 Agustus 2019.
AP Photo/Eraldo Peres
Apa yang menjadi ancaman ketika hutan Amazon, yang merupakan paru-paru Bumi, terbakar? Ilmuwan atmosfer menjelaskan kebakaran yang memang berbahaya tidak berarti oksigen habis di Bumi.
Fire consumes an area near Jaci Parana, state of Rondonia, Brazil, Aug. 24, 2019.
AP Photo/Eraldo Peres
If the Amazon rainforest functions as our planet's lungs, what do raging wildfires threaten? An atmospheric scientist explains why the fires, though devastating, won't suffocate life on Earth.
What factors contribute to some places having many, while other places have few?
Linguists have a lot of largely untested theories. Borrowing a tool from ecology, researchers built a model that didn't look for one worldwide explanation.
Apakah semuanya terlibat?
Organisasi lingkungan utama Amerika Serikat telah berjanji untuk menjanjikan keragaman staf dan dewan mereka selama lebih dari 20 tahun, tetapi bergerak perlahan. Apakah skandal di tempat kerja akan membuat perbedaan?
Treasury Secretary Mnuchin is taking ‘extraordinary measures’ to avoid busting the debt ceiling.
AP Photo/Jose Luis Magana
The US hit the debt ceiling in March and is expected to run out of ways to get around the new $22 trillion limit by September. An economist explains why the ceiling is a dysfunctional relic.
The white “bathtub ring” around Arizona’s Lake Mead (shown on May 31, 2018), which indicates falling water levels, is about 140 feet high.
AP Photo/Ross D. Franklin
Western states adopted a 7-year plan in May 2019 to manage low water levels in the Colorado River. Now they need to look farther ahead and accept that there will be less water far into the future.
Migration offers a fix for the islands 'drowning' as a consequence of the climate crisis – but are there better alternatives?
Jeff Jorgenson looks over a partially flooded field he farms near Shenandoah, Iowa, May 29, 2019.
AP Photo/Nati Harnik
Three scholars argue that agriculture is failing to sustain either the land or American farmers. They propose a modern version of the New Deal that centers on ecology and economic fairness.
Not everyone gets an equal share.
Most of the gains from the record economy went to those at the top, while everyone else saw much smaller gains – if any – in income and wealth.
All together now?
Major US environmental organizations have promised to diversify their staffs and boards for more than 20 years, but moved slowly. Will workplace scandals make a difference?
The problem of unsafe drinking water afflicts poor communities most.
Just as America's highways, sewage systems and water pipes need fixing, so does the growing gap between rich and poor. Trump and the Democrats could use that money to address both.