A giant panda cub at a conservation and research center in the Sichuan Province of China in 2019. Photo: An Yuan/China News Service/Visual China Group via Getty Images

Wildlife populations have plummeted 68% in less than half a century and the "catastrophic" decline shows no sign of slowing down, a major conservation report published Wednesday warns.

Driving the news: The World Wildlife Fund for Nature (WWF) "Living Planet Report 2020" that monitored 4,392 species of mammals, birds, fish, reptiles and amphibians from 1970 to 2016 points to one underlying cause for the populations decline and deterioration of nature: humanity.

What they found: Deforestation undertaken to increase agricultural land space was the biggest contributor to the decline, according to the biennial, which was in collaboration with the Zoological Society of London.

  • Three quarters of all freshwater and a third of all land mass is dedicated to food production, the report notes.
  • Populations in Latin America and the Caribbean have seen the biggest fall, with an average decline of 94%. Global freshwater species have fallen 84%.
  • "Nowhere in the ocean is entirely unaffected by humans," notes the report, with overfishing and pollution exacerbated by climate change cited as major problems.

Of note: The findings concur with those of a 2019 United Nations report that warns 1 million animal and plant species are under threat from extinction — driven by changes in land and sea use; "direct exploitation of organisms," such as hunting, fishing and logging; climate change; pollution; and invasive species.

What they're saying: WWF-U.S. President and CEO Carter Roberts said in a statement, "As humanity’s footprint expands into once-wild places, we're devastating species populations. But we're also exacerbating climate change and increasing the risk of zoonotic diseases like COVID-19."

Between the lines: The spillover of pathogens from animals to humans — driven mainly by human behaviors like urbanization and the demand to eat meat — is increasing, Axios' Eileen Drage O'Reilly notes.

  • These Zoonotic diseases have "quadrupled in the last 50 years, mostly in tropical regions," a letter sent to Congress in March from more than 100 wildlife and environmental groups stated.

The bottom line: A study published in the journal Nature Thursday and co-authored by over 40 nonprofits and academics finds cutting food waste and opting for more nutritional diets would help prevent further losses to the ecosystem.

  • The WWF report also notes that the environmental crisis can be mitigated by such considerations and if world leaders take urgent action on consumption industries, including ending deforestation.

Read the full "Living Planet Report 2020," via DocumentCloud:

Go deeper: Coronavirus is tied to climate and biodiversity crises

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Sep 13, 2020 - Science

Oregon governor: Wildfires are result of climate change and forest mismanagement

Oregon Gov. Kate Brown (D) told CBS News' "Face the Nation" Sunday that the massive fires devastating the West Coast are a result of "decades of mismanagement of our forests in this country" as well as "the failure to tackle climate change."

Why it matters: President Trump has also insisted that the fires were "about forest management," but he's dismissed climate change. There's been a chorus of voices in the West Coast calling Trump out for his climate change policies or lack of.

Updated 7 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Eniola Odetunde/Axios

  1. Global: Total confirmed cases as of 10 p.m. ET: 30,065,728 — Total deaths: 944,604— Total recoveries: 20,423,802Map
  2. U.S.: Total confirmed cases as of 10 p.m. ET: 6,674,070 — Total deaths: 197,615 — Total recoveries: 2,540,334 — Total tests: 90,710,730Map
  3. Politics: Former Pence aide says she plans to vote for Joe Biden, accusing Trump of costing lives in his coronavirus response.
  4. Health: Pew: 49% of Americans would not get COVID-19 vaccine if available today Pandemic may cause cancer uptick The risks of moving too fast on a vaccine — COVID-19 racial disparities extend to health coverage losses.
  5. Business: Retail sales return to pre-coronavirus trend.
Ina Fried, author of Login
8 hours ago - Technology

Scoop: How the Oracle-TikTok deal would work

Illustration: Aïda Amer/Axios

An agreement between TikTok's Chinese owner ByteDance and Oracle includes a variety of concessions in an effort to make the deal palatable to the Trump administration and security hawks in Congress, according to a source close to the companies.

Driving the news: The deal, in the form of a 20-page term sheet agreed to in principle by the companies, would give Oracle unprecedented access and control over user data as well as other measures designed to ensure that Americans' data is protected, according to the source.