Pop X: A Newsletter on UNSUSTAINABLE Human Population Growth and the Extinction Crisis

The Center for Biological Diversity has launched a monthly e-publication called Pop X that examines the connection between unsustainable human population, overconsumption and the extinction of plants and animals around the world.

Get a free issue of Pop X delivered right to your inbox each month by signing up here:

No. 159, February 17, 2024 – We Heart National Condom Week

No. 158, January 20, 2024 – Climate-Killing Foods Can't Be Ignored

No. 157, December 16, 2023 – A Missed Opportunity to Tackle Food Emissions

No. 156, November 18, 2023 – Ultra-Processed Problems

No. 155, October 21, 2023 – Extinction Is Scary

No. 154, September 25, 2023 – 75,000 People March to End Fossil Fuels

No. 153, August 19, 2023 – Overshooting Earth's Resources

No. 152, July 15, 2023 – Climate Vulnerability and Resilience

No. 151, June 24, 2023 – The Fight for Reproductive Rights Continues

No. 150, May 27, 2023 – 50 Years Later

No. 149, April 20, 2023 – A Material World

No. 148, March 16, 2023 – The Growing Child-Free Movement

No. 147, Feb. 16, 2023 – The Extinction Crisis at Home

No. 146, Jan. 26, 2023 – The Lost Mountain Lion of Los Angeles

No. 145, Dec. 15, 2022 – A Paris Agreement for Nature

No. 144, Nov. 17, 2022 – A Planet of 8 Billion

No. 143, Oct. 20, 2022 – Fighting Hunger by Fighting Climate Change

No. 142, Sept. 15, 2022 – Vasectomies on the Rise

No. 141, Aug. 18, 2022 – Heatflation and the Cost of Food

No. 140, July 28, 2022 – On the Edge of 8 Billion

No. 139, June 16, 2022 – Drought's Hidden Danger

No. 138, May 19, 2022 – The Importance of Sustainable Diets

No. 137, April 22, 2022 – Gender and the Climate Crisis

No. 136, March 25, 2022 – Grazing the Wild

No. 135, February 17, 2022 – The Sex Education Gap

No. 134, January 21, 2022 – The Pope's Parenthood Problem

No. 133, December 17, 2021 – McDonald’s Methane Problem

No. 132, November 19, 2021 – Why Wool Isn't Green

No. 131, October 15, 2021 – Goodbye, Ivory-Billed Woodpecker

No. 130, September 18, 2021 – Eating for a Small Planet

No. 129, August 27, 2021 – Floods and Droughts

No. 128, July 16, 2021 – Under the Heat Dome

No. 127, June 17, 2021 – The Population Conversation Gap

No. 126, May 21, 2021 – Family Planning in Uncertain Times

No. 125, April 16, 2021 – What Meat Means

No. 124, March 19, 2021 – The 'Crisis' That Isn't

No. 123, February 19, 2021 – Take Extinction Off Your Plate

No. 122, January 16, 2021 – How We Build Back Better

No. 121, December 18, 2020 – Hope Within Hardship

No. 120, November 20, 2020 – What Comes Next

No. 119, October 23, 2020 – Condoms and Conservation

No. 118, September 18, 2020 – Wildfires, Floods and the New 'Not Normal'

No. 117, August 21, 2020 – Crowded Planet

No. 116, July 16, 2020 – Contraception in Crisis

No. 115, June 26, 2020 – The Conversations We Need to Have

No. 114, May 22, 2020 – Too Hot for Humans

No. 113, April 16, 2020 – Our Vision for a Greener, Safer, Fairer Food System

No. 112, March 26, 2020 – COVID-19, Cows and Utility Shutoffs

No. 111, February 28, 2020 – Faith, Food and Saving Life on Earth

No. 110, January 17, 2020 – Hope for the New Year and a Call to Action

No. 109, December 20, 2019 – Meat Reduction Gets a Place at the Table

No. 108, November 22, 2019 – A Warning From 11,000 Scientists

No. 107, October 18, 2019 – How to 'Sell' Social Change

No. 106, September 21, 2019 – Millions Stand With Kids for the Future

No. 105, August 17, 2019 – Breaking the Vicious Cycle of Our Food System

No. 104, July 27, 2019 – The Double-edged Power of the Human Voice

No. 103, June 22, 2019 – The Climate Crisis Blame Game

No. 102, May 18, 2019 – 1 Million Species Are Counting On Us to Get This Right

No. 101, April 26, 2019 – Walruses, Deserts and Impossible Burgers

No. 100, March 15, 2019 – Family Planning in the Era of Climate Change

No. 99, February 16, 2019 – Get Hitched Without Killing the Planet

No. 98, January 18, 2019 – What the Shutdown Means for Wildlife, Wild Places

No. 97, December 20, 2018 – Turning the Tide in 2019

No. 96, November 16, 2018 – Reasons for Hope After the Election

No. 95, October 19, 2018 – The Scary Truth About Climate Change

No. 94, September 21, 2018 – Food for Thought This Fall

No. 93, August 17, 2018 – Heatwaves and Hurricanes

No. 92, July 20, 2018 – Earth Overshoot Day

No. 91, June 22, 2018 – Power to the People

No. 90, May 18, 2018 – From the Ballot Box to the Bedroom

No. 89, April 20, 2018 – This Earth Day: Buy Less, Have Safe Sex

No. 88, March 17, 2018 – Women, Power and the Future of the Planet

No. 87, February 16, 2018 – Trump and the Fight to Save Our Oceans

No. 86, January 19, 2018 – New Year, New Resolve

No. 85, December 15, 2017 – The 12 Days of Family Planning

No. 84, November 25, 2017 – The Season of Waste

No. 83, October 21, 2017 – A Day for Love, Loss and the Wild

No. 82, September 16, 2017 – Climate Change Close to Home

No. 81, August 18, 2017 – #BetterThanEd: Help Us Keep the Conversation Going

No. 80, July 28, 2017 – Endangered Species Condoms for Every Senator

No. 79, June 23, 2017 – Beyond Paris

No. 78, May 19, 2017 – Sustainability on the Chopping Block

No. 77, April 21, 2017 – Bringing the Resistance to Earth Day

No. 76, March 17, 2017 – Will the Pope Help Tackle Population Growth?

No. 75, Feb. 24, 2017 – The Resistance Marches On

No. 74, Jan. 27, 2017 – Reproductive Freedom, Population Growth and #WhyWeMarch

No. 73, Dec. 16, 2016 – #Earth2Trump: The Road to Inauguration

No. 72, Nov. 18, 2016 – The Fight Ahead

No. 71, Oct. 28, 2016 – Vote for the Environment: Tuesday, Nov. 8

No. 70, Sept. 24, 2016 – We Stand With the Standing Rock Sioux

No. 69, Aug. 19, 2016 – Equal Access to the Sun

No. 68, July 22, 2016 – Are We Pushing Biodiversity Off the Planet?

No. 67, June 24, 2016 – Before You Fire Up the Grill...A Look at the Numbers

No. 66, May 21, 2016 – "Extinction Facts" Labels Reveal Hidden Cost of Meat Consumption

No. 65, April 16, 2016 – Public Lands for All

No. 64, March 18, 2016 – The Solar Revolution

No. 63, February 20, 2016 – Help Wildlife Find Love, Too

No. 62, January 15, 2016 – Resolutions for Wildlife

No. 61, December 19, 2015 – What Didn't Happen in Paris

No. 60, November 20, 2015 – Bacongate and Bottled Water

No. 59, October 23, 2015 – Did You Get Whacked for Wildlife?

No. 58, September 19, 2015 – The End of the Faux Population vs. Consumption Debate

No. 57, August 22, 2015 – Why We Need the Lorax More Than Ever

No. 56, July 17, 2015 – A Tale of Two Droughts

No. 55, June 19, 2015 – Who Are Your Wild Neighbors?

No. 54, May 15, 2015 – The Disappearance of Herbivores

No. 53, April 17, 2015 – Are Showers and Ice Cubes Driving the Drought?

No. 52, March 21, 2015 – Can IUD Earrings Save the World?

No. 51, February 20, 2015 – Greening the Food Pyramid

No. 50, January 23, 2015 – Breaking the Taboo

No. 49, December 19, 2014 – The Next Gen of Population Activists

No. 48, November 21, 2014 – Don't Hit Snooze on Population Wake-up Call

No. 47, October 17, 2014 – Fear Extinction, the Ghost of Halloween Future

No. 46, September 19, 2014 – A Future Without Fireflies?

No. 45, August 15, 2014 – Steep Price for Florida's Newest Walmart

No. 44, July 18, 2014 – What Does Hobby Lobby Have to Do With Wildlife?

No. 43, June 20, 2014 – What's Driving Wildlife Extinctions?

No. 42, May 16, 2014 – Supersizing Climate Change

No. 41, April 18, 2014 – Earth Day 1970 -- Back to Basics

No. 40, March 21, 2014 – Take a Bite Out of Extinction

No. 39, February 21, 2014 – Condoms Go Wild on Valentine's Day

No. 38, January 17, 2014 – Polar Vortexes, Meat Taxes and Tuna Auctions

No. 37, December 20, 2013 – Five Ways to Save the World

No. 36, November 15, 2013 – Lost Frogs and Carbon Hoofprints

No. 35, October 18, 2013 – Talking With Alan Weisman -- Watch Video

No. 34, September 13, 2013 – A Stinkbug a Day Keeps the Doctor Away

No. 33, July 26, 2013 – Interview Issue 1

No. 32, June 21, 2013 – 11 Billion and Bust

No. 31, May 18, 2013 – Is Modern Life a Drag?

No. 30, April 24, 2013 – 15,000 Condoms for Earth Day

No. 29, March 15, 2013 – Special Population Polling Edition

No. 28, February 15, 2013 – Grousing About Human Population Growth

No. 27, January 18, 2013 – 36 Million Forest Acres to Be Paved by 2050

No. 26, December 14, 2012 – Springs and Rivers, Corals and Condoms

No. 25, November 23, 2012 – Sunshine State of Mind

No. 24, October 19, 2012 – 463,000 Square Miles of New Cities

No. 23, September 21, 2012 – Eat Your Veggies, Save the World

No. 22, August 24, 2012 – The Biggest Gamble in Vegas

No. 21, July 20, 2012 – Runaway Growth in Texas

No. 20, June 22, 2012 – World's Scientists Unite, Tell Leaders to Stop Overpop

No. 19, May 25, 2012 – Talking "Birds and Bees" to Thousands of People

No. 18, April 20, 2012 – Take Action on Earth Day

No. 17, March 16, 2012 – Earth Day Condoms -- Get Yours Now

No. 16, February 17, 2012 – What If We All Used Less?

No. 15, January 20, 2012 – The Right Call for Species

No. 14, December 16, 2011 – Panthers on the Brink

No. 13, November 25, 2011 – 7 Billion, What Now?

No. 12, October 14, 2011 – 7.5 billion Benchmark Inspires Thousands to Act

No. 11, September 16, 2011 – 7.5 billion and Counting -- on You

No. 10, August 19, 2011 – Expecting the 7 Billionth Baby

No. 9, July 15, 2011 – A Splash in the Big Apple

No. 8, June 24, 2011 – Speak Out on World Population Day

No. 7, May 13, 2011 – 10 Billion By 2100

No. 6, April 15, 2011 – Reef Madness

No. 5, March 18, 2011 – Overpopulation Down Under

No. 4, February 18, 2011 – Speak Out and Speak Up

No. 3, January 14, 2011 – In 2011, More Condoms, and Speak Out on 7 Billion

No. 2, December 17, 2010 – Media Spotlight on Overpopulation, Southwest Water Crisis Looms

No. 1, November 19, 2010 – POP X: The Center's New Overpopulation and Extinction Crisis Newsletter