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    Tonga volcano eruption blamed for oil spill in Peru, crews race to save animals

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  • Race to rescue manatees dying at unprecedented rate in Florida

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  • Drone captures images of ice cave caused by climate change in Switzerland

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  • How the elite U.S. Forest Service hotshots battle wildfires (Part 1)

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  • How the elite U.S. Forest Service hotshots battle wildfires (Part 2)

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  • Climate change in Guatemala: Between starvation and migration (Part 1)

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  • Climate change in Guatemala: Between starvation and migration (Part 2)

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  • Kentucky governor: 'Miracle' more people weren't killed in candle factory destruction

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  • Paddleboarders spot giant ocean sunfish off California coast

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  • 'It's heartbreaking:' Survivors speak about tornadoes, destruction caused by storms

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  • Atlanta girl becomes youngest USDA certified farmer in Georgia

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  • Viscose rayon is billed as an eco-friendly fabric. Critics say production can be harmful to rainforests.

    04:08
  • McDonald’s opens first zero-carbon restaurant in United Kingdom

    01:39
  • How Norilsk, Russia, became one of the most polluted places on Earth

    01:05
  • Tropical rainforests are regrowing in Puerto Rico

    04:03
  • At least one dead, dozens injured after volcano erupts in Indonesia

    00:56
  • New report reveals California as biggest consumer of oil drilled from Ecuador

    07:51
  • Scientists study spectacular Great Barrier Reef spawning

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  • Oil companies to bid on newly released federal Gulf leases

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  • Climate conference talks in overtime with key issues at stake

    02:12

Business, tourism take a hit as Great Lakes evaporate

02:29

In December, Lake Michigan and Lake Huron hit record lows, followed by Lake Superior which is the largest freshwater lake in the world. They all remain below their historical averages. NBC’s Anne Thompson reports.