Authorities are continuing to search for a Michigan woman reported missing at Grand Canyon National Park.

The Navajo Nation has approved emergency legislation meant to strengthen a tribal law that regulates transportation of radioactive material across the largest Native American reservation in the U.S. The move is in response to the revival of a uranium mining operation just south of the Grand Canyon that has drawn much criticism from environmentalists and Native American tribes in the region.

The first three days of the NCAA Tournament attracted record ratings, only to see the momentum stifled due to Sunday’s games being blowouts.

Tyon Grant-Foster scored 22 points, and Grand Canyon earned its first NCAA Tournament victory as the 12th-seeded Antelopes knocked off No. 5 seed Saint Mary’s 75-66.

Tyon Grant-Foster is living out his dream playing college basketball at Grand Canyon after nearly having the game taken away from him.

President Joe Biden has signed a national monument designation for the greater Grand Canyon, declaring it good “not only for Arizona but for the planet.”.

Members of a small tribe in Arizona are marking the renaming of a popular campground in Grand Canyon National Park as Havasupai Gardens.

A man fell to his death at the Grand Canyon last week, according to the National Park Service.

A key fish that has dwelt in the Colorado River since ancient times, and whose presence indicates a healthy river, is now up against a threat from a giant dam above.

Large swaths of Arizona have been inundated by flooding this week.

Large swaths of Arizona have been inundated by flooding this week.

The “Nomad’s Pad" will offer incredible serenity in the desert for travelers.

The Indiana Farmers Coliseum scoreboard goes dark after a first round NCAA college basketball tournament game between Iowa and Grand Canyon Saturday, March 20, 2021, in Indianapolis. (AP Photo/Charles Rex Arbogast)If you didn’t pay attention to college basketball until the NCAA Tournament, the good news is you didn’t miss much. The loss marked the second time in the Cavaliers’ last three NCAA Tournament appearances — this time as a No. “He kind of got his legs under him and he was really, really good in the second half,” Self said afterward. “I mean really, really good.”___More AP college basketball: https://apnews.com/hub/college-basketball and updated bracket: https://apnews.com/hub/ncaa-mens-bracket

(AP Photo/Charles Rex Arbogast)INDIANAPOLIS – Iowa got 24 points from Luka Garza and avoided the early NCAA Tournament exit that befell other high seeds with an 86-74 victory over Grand Canyon in the West Region on Saturday night. AdGrand Canyon (17-7) gave the Havocs reason to remain on their feet early by keeping the Hawkeyes within reach before an Iowa surge before halftime allowed the Hawkeyes to pull away. Garza got off to a great start, hitting a pair of 3-pointers while scoring eight early points. Iowa made six 3s and hit 16 of 29 shots to stretch the lead to 42-31 at halftime. Grand Canyon had its first taste of the NCAA Tournament and the Havocs had a road party.

(AP Photo/Chase Stevens)INDIANAPOLIS – There has never been a better time to have senior leadership in the NCAA Tournament than this season. AdVirginia intends to play after withdrawing from the ACC Tournament because of COVID-19 protocols, which means fans will get to say Sam Hauser running the show. Dru Smith is their leading scorer and Jeremiah Tilmon finally reached his potential this season, and both aim to help Missouri snap a four-game NCAA Tournament skid. Herb Jones is an All-American candidate and Jaden Shackelford is Alabama's leading scorer, but John Petty Jr. makes the SEC Tournament champs go. Then there's Tennessee forward John Fulkerson, who sustained facial fractures in an SEC Tournament win over Florida and underwent surgery Sunday.

(Mohave County Sheriff's Office via AP)DOLAN SPRINGS, Ariz. – A Las Vegas-based tour bus heading to the Grand Canyon rolled over in northwestern Arizona on Friday, killing one person and critically injuring two others, authorities said. “A lot of them were saying the bus driver was driving at a high rate of speed,” he said. The bus was heading to Grand Canyon West, about 2 1/2 hours from Las Vegas and outside the boundaries of Grand Canyon National Park. Before the pandemic, about 1 million people a year visited Grand Canyon West, mostly through tours booked out of Las Vegas. Rafters who are on trips through the Grand Canyon also can get on and off the river on the reservation.

A leading conservation agency is warning that climate change is damaging the U.N.' most cherished heritage sites. Sixteen World Heritage sites have deteriorated since the last World Heritage Outlook was released three years ago, while only eight improved, said the International Union for Conservation of Nature, made up of governments and civil society groups and advises UNESCO on natural threats to those sites. “Natural World Heritage sites are amongst the world’s most precious places, and we owe it to future generations to protect them,” IUCN Director-General Bruno Oberle said. It said while 63% of the heritage sites are classified as “good” or “good with some concerns,” 30% are of “significant concern” and 7% are in “critical” shape. ___Read all of AP’s stories about climate change at https://apnews.com/hub/Climate.