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Three scissor-tailed flycatcher fledglings in a mesquite tree in Texas. Texas Eagle / CC BY-NC 2.0

By Gary Paul Nabhan

President Trump has declared a national emergency to fund a wall along our nation's southern border. The border wall issue has bitterly divided people across the U.S., becoming a vivid symbol of political deadlock.

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PeopleImages / E+ / Getty Images

By Daniel Ross

Hurricane Florence, which battered the U.S. East Coast last September, left a trail of ruin and destruction estimated to cost between $17 billion and $22 billion. Some of the damage was all too visible—smashed homes and livelihoods. But other damage was less so, like the long-term environmental impacts in North Carolina from hog waste that spilled out over large open-air lagoons saturated in the rains.

Hog waste can contain potentially dangerous pathogens, pharmaceuticals and chemicals. According to the state's Department of Environmental Quality, as of early October nearly 100 such lagoons were damaged, breached or were very close to being so, the effluent from which can seep into waterways and drinking water supplies.

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This picture taken on May 21, 2018 shows discarded climbing equipment and rubbish scattered around Camp 4 of Mount Everest. Decades of commercial mountaineering have turned Mount Everest into the world's highest rubbish dump as an increasing number of big-spending climbers pay little attention to the ugly footprint they leave behind. DOMA SHERPA / AFP / Getty Images

China has closed its Everest base camp to tourists because of a buildup of trash on the world's tallest mountain.

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Berezko / iStock / Getty Images

The last thing on your mind in February is gardening. But this is prime time to prepare for a very important task: planting fruit trees.

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Researchers tested the eggs of Arctic northern fulmers like these in Nunavut, Canada. Fiona Paton / Flickr

By Madison Dapcevich

Plastics have been recorded in every corner of the world, from the remote icy waters of Antarctica to the bellies of deep-sea fishes. Now, preliminary findings presented at this year's American Association for the Advancement of Science (AAAS) annual meeting in Washington, DC suggest that bird eggs from the high Arctic—one of the most remote wildernesses on the planet—show evidence of contamination from chemicals used in plastics.

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The Bramble Cay melomys. State of Queensland / CC BY 3.0 AU

A small Australian rat that lived on a 12 acre island in the Great Barrier Reef has become the first mammal to go extinct primarily because of human-caused climate change, the Australian Government confirmed Monday.

The Bramble Cay melomys was first declared extinct after a 2014 search on Bramble Cay, its native island in the Torres Strait, between Queensland, Australia and Papua New Guinea, according to a 2016 report by the University of Queensland and the Queensland government.

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Wallace Broecker gave a lecture "Dealing With the CO2 Crisis" at Columbia University in 2013. Columbia University / YouTube screenshot

Wallace Broecker, the groundbreaking scientist responsible for popularizing the term "global warming," died in New York Monday at the age of 87.

Broecker spent almost 67 years researching at Columbia University's Lamont-Doherty Earth Observatory, which confirmed his death, Columbia's Earth Institute reported.

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zeljkosantrac / E+ / Getty Images

Medically reviewed by Hrefna Palsdottir, MS

Oats are considered to be one of the healthiest grains on earth. Find out why and how to incorporate this breakfast staple into your morning routine.

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Youth activists ages 11-18 learn to fight plastic pollution at the inaugural Ocean Heroes Bootcamp. Ocean Heroes Bootcamp

By 2018 Ocean Heroes: Claire MacQueen (13 years old), Sabine Thomas (13) and Ava Inskeep (14)

We despise single-use plastics. We want to keep our oceans and our beaches clean. Early last year I (Claire) lived in India for several months and became curious about plastic waste, as it was much more visible in India than back home in the U.S. Seeing all the plastic waste while I was visiting helped me to understand that much of the trash produced by the U.S. actually ends up in developing countries, like India, which does not have a proper waste management system like we do at home, which causes a ton of trash to end up in waterways and the ocean.

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Sen. Bernie Sanders speaks at a Martin Luther King Jr. Day event in South Carolina on Jan. 21. Sean Rayford / Getty Images

Independent Vermont Sen. Bernie Sanders announced Tuesday that he will run for president in 2020, becoming the latest candidate in a crowded Democratic primary field to promise a Green New Deal if elected, The Washington Post reported.

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