For the First Time Ever, a Mammal Has Been Declared Extinct Due to Climate Change

The Whitsunday Islands in Australia's Great Barrier Reef
The Whitsunday Islands in Australia's Great Barrier Reef
iStock.com/4FR

An Australian rat-like rodent called the Bramble Cay melomys is the first known mammal wiped out by manmade climate change, The Hill reports. The now-extinct animal (Melomys rubicola) lived on the tiny, uninhabited island of Bramble Cay in the Great Barrier Reef. Despite exhaustive efforts to track down the melomys over seven years, no signs of the rodent could be found, and in 2016, Queensland’s state government declared the animal extinct.

These fears were confirmed when news broke this week that the national government had quietly changed the rodent’s classification from endangered to extinct. Meanwhile, the status of a fruit bat called the spectacled flying-fox was changed from vulnerable to endangered after a recent heatwave in north Queensland, which dealt another blow to a population that had already been cut in half over the last decade.

As for the Bramble Cay melomys, its demise can be attributed to rising sea levels, storm surges, and other weather events that have worsened due to climate change. According to The Revelator, the tides destroyed about 97 percent of the island’s vegetation, which was the rodent’s only food source.

Leeanne Enoch, Queensland's Minister for Environment and the Great Barrier Reef, told The Sydney Morning Herald that the latest animal extinction is evidence “we are living the real effects of climate change right now.”

In a 2018 study commissioned by the World Wildlife Fund, researchers found that up to half of the 80,000 plant and animal species that reside in 35 of the world’s most diverse areas could become extinct by the turn of the century because of climate change.

For some species, it’s already too late. A Hawaiian bird called the poo-uli (or black-faced honeycreeper) was declared extinct last year, largely due to diseases carried by mosquitoes, which thrive in warmer climates. For other endangered species in the U.S.—like the black-footed ferret, red wolf, and rusty patched bumble bee—there might still be time to step in and protect them.

[h/t The Hill]

No Venom, No Problem: This Spider Uses a Slingshot to Catch Prey

Courtesy of Sarah Han
Courtesy of Sarah Han

There are thousands of ways nature can kill, and spider species often come up with the most creative methods of execution. Hyptiotes cavatus, otherwise known as the triangle weaver spider, is one such example. Lacking venom, the spider manages to weaponize its silk, using it to hurl itself forward like a terrifying slingshot to trap its prey.

This unusual method was studied up close for a recent paper published in the Proceedings of the National Academy of Sciences by researchers at the University of Akron in Ohio. They say it's the only known instance of an animal using an external device—its web—for power amplification.

Hyptiotes cavatus's technique is simple. After constructing a web, the spider takes one of the main strands and breaks it in half, pulling it taut by moving backwards. Then, it anchors itself to a spot with more webbing in the rear. When the spider releases that webbing, it surges forward, propelled by the sudden release of stored energy. In the slingshot analogy, the webbing is the strap and the spider is the projectile.

This jerking motion causes the web to oscillate, tangling the spider's prey further in silk. The spider can repeat this until the web has completely immobilized its prey, a low-risk entrapment that doesn’t require the spider to get too close and risk injury from larger victims.

The triangle weaver spider doesn’t have venom, and it needs to be proactive in attacking and stifling prey. Once a potential meal lands in its web, it’s able to clear distances much more quickly using this slingshot technique than if it crawled over. In the lab, scientists clocked the spider’s acceleration at 2535 feet per second squared.

Spiders are notoriously nimble and devious. Cebrennus rechenbergi, or the flic-flac spider, can do cartwheels to spin out of danger; Myrmarachne resemble ants and even wiggle their front legs like ant antennae. It helps them avoid predators, but if they see a meal, they’ll drop the act and pounce. With H. cavatus, it now appears they’re learning to use tools, too.

[h/t Live Science]

Plano, Texas Is Home to a Dog-Friendly Movie Theater That Serves Bottomless Wine or Whiskey

K9 Cinemas
K9 Cinemas

For dog owners in Plano, Texas, movie night with Fido no longer just means cuddling on the couch and browsing Netflix. The recently opened K9 Cinemas invites moviegoers—both human and canine—to watch classic films on the big screen. And the best part for the human members of this couple? Your $15 ticket includes bottomless wine or whiskey (or soft drinks if you're under 21).

The theater operates as a pop-up (or perhaps pup-up?) in a private event space near Custer Road and 15th Street in Plano. Snacks—both the pet and people kind—are available for $2 apiece. Dogs are limited to two per person, and just 25 human seats are sold per showing to leave room for the furry guests.

Pet owners are asked follow a few rules in order to take advantage of what the theater has to offer. Dogs must be up-to-date on all their shots, and owners can submit veterinary records online or bring a hard copy to the theater to verify their pooch's health status. Once inside, owners are responsible for taking their dog out for potty breaks and cleaning up after any accidents that happen (thankfully the floors are concrete and easy to wipe down).

While many of the movies shown are canine-themed—a recent screening of A Dog's Journey included branded bandanas with every ticket purchase—they also hold special events, like a Game of Thrones finale watch party (no word on how the puppers in attendance responded to Jon Snow finally acknowledging what a good boy Ghost is).

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