内容摘要：Planetary’s Burt imagines a future in which minerals are pumped out through power plants and water treatment facilities on every major coastline in the world. But that would require a large, steady volume of magnesium oxide or similar minerals, along with the energy to mine and transport them.

Planetary’s Burt imagines a future in which minerals are pumped out through power plants and water treatment facilities on every major coastline in the world. But that would require a large, steady volume of magnesium oxide or similar minerals, along with the energy to mine and transport them.

Democratic presidential nominee Vice President Kamala Harris appears on NBC’s “Saturday Night Live,” with Maya Rudolph, Saturday, Nov. 2, 2024 in New York. (AP Photo/Jacquelyn Martin)Democratic presidential nominee Vice President Kamala Harris appears on NBC’s “Saturday Night Live,” with Maya Rudolph, Saturday, Nov. 2, 2024 in New York. (AP Photo/Jacquelyn Martin)

Republican presidential nominee former President Donald Trump is reflected in the bullet proof glass as he finishes speaking at a campaign rally in Lititz, Pa., Sunday, Nov. 3, 2024. (AP Photo/Matt Rourke)Republican presidential nominee former President Donald Trump is reflected in the bullet proof glass as he finishes speaking at a campaign rally in Lititz, Pa., Sunday, Nov. 3, 2024. (AP Photo/Matt Rourke)A political advertisement for Democratic presidential nominee Vice President Kamala Harris is displayed on the Sphere, Monday, Nov. 4, 2024, in Las Vegas. (AP Photo/John Locher)

A political advertisement for Democratic presidential nominee Vice President Kamala Harris is displayed on the Sphere, Monday, Nov. 4, 2024, in Las Vegas. (AP Photo/John Locher)Republican presidential nominee former President Donald Trump speaks at a campaign rally at PPG Paints Arena, Monday, Nov. 4, 2024, in Pittsburgh, Pa. (AP Photo/Evan Vucci)

Republican presidential nominee former President Donald Trump speaks at a campaign rally at PPG Paints Arena, Monday, Nov. 4, 2024, in Pittsburgh, Pa. (AP Photo/Evan Vucci)

Democratic presidential nominee Vice President Kamala Harris, left, shares a laugh with second gentleman Doug Emhoff, after reuniting in Pittsburgh, Monday, Nov. 4, 2024, aboard Air Force Two, just before taking off from Pittsburgh for her final campaign rally in Philadelphia. (AP Photo/Jacquelyn Martin, Pool)like mastodons, saber-toothed cats and dire wolves that once roamed North and South America.

But new research from several sites is starting to suggest that people came to the Americas earlier —— than once thought. These findings hint at a remarkably different life for these early Americans, one in which they may have spent millennia sharing prehistoric savannas and wetlands with enormous beasts.

This combination of illustrations provided by researchers in 2024 shows large animals which once roamed prehistoric North and South America. Top row from left, a glyptodon, a lestodon, and a horse. Bottom row from left, a mastodon, a saber-toothed cat and a toxodon. (Mauro Muyano via AP)This combination of illustrations provided by researchers in 2024 shows large animals which once roamed prehistoric North and South America. Top row from left, a glyptodon, a lestodon, and a horse. Bottom row from left, a mastodon, a saber-toothed cat and a toxodon. (Mauro Muyano via AP)