A koala named Paul from Lake Innes Nature Reserve recovers from his burns in the ICU at The Port Macquarie Koala Hospital, Nov. 29, 2019, Port Macquarie, Australia. Photo: Nathan Edwards/Getty Images

More than 1 billion animals are believed to have been killed in wildfires that have ravaged Australia since September, University of Sydney professor Chris Dickman told the Huffington Post in an update from his previous estimate of 480 million last week.

Why it matters: The fires have threatened Australia's wildlife, known for its rare animals and distinctive ecosystems. The environment was already imperiled by deforestation to support the country's growing agribusiness.

  • The scale of the damage remains unclear because of a lack of access to the burned areas and because it is difficult to document animal deaths, but scientists say "it is clear that the devastation is immense," per the New York Times.
  • Dickman explained that his earlier estimate was conservative and exclusive to the state of New South Wales — which he now estimates has more than 800 million dead animals alone.

What he's saying: "The original figure ― the 480 million ― was based on mammals, birds and reptiles for which we do have densities, and that figure now is a little bit out of date," Dickman told HuffPost.

  • "Over a billion would be a very conservative figure," he said of the deaths continent-wide, adding that the toll has exceeded 1 billion "without any doubt at all."

Zoom in: Experts say thousands of kangaroos and koalas have been killed on Kangaroo Island, off the coast of South Australia, of which one-third has been destroyed, per the Times. They fear the worst for the island's subspecies of cockatoos, which only had a population of 300–370 before the fires.

  • In a remote area of South Australia, aboriginal officials say they've approved a cull of up to 10,000 camels, as a drought has driven the thirsty animals to "threatening the APY [local government] communities and infrastructure," CNN reports.

Be smart: The estimated death toll is calculated by multiplying the number of estimated animals in a given area by the number of acres burned, according to Dickman.

Go deeper:

Go deeper

Updated 7 mins ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 10:30 a.m. ET: 30,217,420 — Total deaths: 946,847— Total recoveries: 20,554,349Map.
  2. U.S.: Total confirmed cases as of 10:30 a.m. ET: 6,677,516 — Total deaths: 197,682 — Total recoveries: 2,540,334 — Total tests: 91,546,598Map.
  3. Politics: Trump vs. his own administration on virus response.
  4. Health: Massive USPS face mask operation called off The risks of moving too fast on a vaccine.
  5. Business: Unemployment drop-off reverses course 1 million mortgage-holders fall through safety netHow the pandemic has deepened Boeing's 737 MAX crunch.
  6. Education: At least 42% of school employees are vulnerable.
Dan Primack, author of Pro Rata
12 mins ago - Economy & Business

U.S. nutritional supplements retailer takes first step to sell to China’s Harbin Pharma

Illustration: Sarah Grillo/Axios

GNC Holdings, the Pittsburgh-based nutritional supplements retailer, received bankruptcy court approval to sell itself to China’s Harbin Pharma for $770 million, although the deal still faces U.S. political pressures over how GNC customer data is protected.

Why it matters: It's a reminder that the U.S.-China merger mess goes well beyond smartphone apps, with Sen. Marco Rubio asking for a CFIUS review.

Ben Geman, author of Generate
1 hour ago - Energy & Environment

Tallying Trump's climate changes

Reproduced from Rhodium Climate Service; Chart: Axios Visuals

The Trump administration's scuttling or weakening of key Obama-era climate policies could together add 1.8 gigatons of carbon dioxide equivalent to the atmosphere by 2035, a Rhodium Group analysis concludes.

Why it matters: The 1.8 gigatons is "more than the combined energy emissions of Germany, Britain and Canada in one year," per the New York Times, which first reported on the study.