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View on Napali Coast on Kauai island on Hawaii

Travel to Hawaii during Covid-19: What you need to know before you go

ROYAL PALM BEACH, FLORIDA - JUNE 10: Palm Beach County Sheriff's officers stand outside of a Publix supermarket where a woman, child and a man were found shot to death on June 10, 2021 in Royal Palm Beach, Florida. Law enforcement officials continue to investigate the crime scene for clues as to why the shooting occurred. (Photo by Joe Raedle/Getty Images)

Gunman in Florida grocery store shot baby first before killing grandmother, investigator says

American Airlines planes are parked at the gates at Washington National Airport on Tuesday, June 30, 2020.

FAA's new cleaning methods at air traffic towers aim to curb flight delays

"The Bubble Barrier" was developed as a simple way to stop plastic pollution flowing from waterways into the ocean. Installed in Amsterdam's Westerdok canal, an air compressor sends air through a perforated tube running diagonally across the bottom of the canal, creating a stream of bubbles that traps plastic and guides it to a catchment system.

A 'Bubble Barrier' is trapping plastic waste before it can get into the sea

Lorde drops 'Solar Power' video

CARBIS BAY, ENGLAND - JUNE 10: Britain's Prime Minister Boris Johnson speaks with U.S. President Joe Biden during their meeting, ahead of the G7 summit, at Carbis Bay Hotel, on June 10, 2021 near St Ives, England. UK Prime Minister, Boris Johnson, will host leaders from the USA, Japan, Germany, France, Italy and Canada at the G7 Summit that begins on Friday, June 11 2021. (Photo by Toby Melville - WPA Pool/Getty Images)

Climate, taxes and China: Investors are watching the G7

screengrab china elephants

Elephant migration may reveal serious problem for China

A hospital ward made from trash highlights Arthur Huang's mission to revolutionize recycling

Dried reservoir bed at the Second Baoshan Reservoir in Hsinchu, Taiwan, on Wednesday, April 7, 2021. Chip plants in Taiwan called in water trucks earlier this year to ensure supply during a drought caused by the absence of monsoon rains. Photographer: Billy H.C. Kwok/Bloomberg via Getty Images

The chipmaking factory of the world is battling Covid and the climate crisis

Wind turbines in Iowa Falls, Iowa, in 2016.

The green energy revolution is coming -- with or without help from Washington

How drought is playing out in Tule Lake National Wildlife Refuge in Northern California.

Reservoir shut down over drought pits neighbors against each other

GASCOYNE, ND - OCTOBER 14: Miles of unused pipe, prepared for the proposed Keystone XL pipeline, sit in a lot on October 14, 2014 outside Gascoyne, North Dakota. (Photo by Andrew Burton/Getty Images)

Developer pulls the plug on Keystone XL oil pipeline

How Biden's plan may get some to warm up to green energy

Taiwanese architect and engineer Arthur Huang was inspired by the ancient Roman practice of using discarded material in architecture.

One man's mission to make treasure out of trash

Massive e-waste sculpture of G7 leaders appears near summit site

Boris and Biden: A diplomatic odd couple faces pressure to define the US-UK relationship

Sri Lanka sinking cargo ship MV X-Press Pearl Ripley pkg intl hnk vpx_00001612.png

Denuncian contaminación en el mar en Sri Lanka