Add Yahoo as a preferred source to see more of our stories on Google. Praveen P.N/Getty Images Papakōlea Beach, also known as Green Sand Beach located near South Point on the Big Island of Hawaii.

Add Yahoo as a preferred source to see more of our stories on Google. Seeing green at the beach is usually reserved for swaying palm trees or seaweed that washes ashore. But there are exactly four ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. The destination is accessible only by foot, so tourists on Hawaii's Big ...

On a beach in the Caribbean, a nonprofit called Project Vesta will soon begin testing a radical new way to fight climate change that involves spreading ground-up olivine—a cheap green mineral—over the ...