Scientific news in small doses

Scientific news in small doses

Scientific news in small doses

A few milligrams of all the science news of the week.

Posted at 6:00

Mathieu Perreault

Mathieu Perreault
The print

The return of the Tasmanian tiger

An American “de-extinction” company, Colossal Biosciences, announced in mid-August that it was working on the thylacine, or Tasmanian tiger. It is a dog-sized marsupial that disappeared 2,000 years ago from Australia but survived in Tasmania. The European settlers, believing that he was attacking their chickens and sheep, exterminated him. The last individual died in 1936 in a zoo in Tasmania. Colossal Biosciences, founded by renowned Harvard biologist George Church, announced a mammoth revival project based on CRISPR technology last year.

Quiz


PHOTOS FROM THE NASA WEBSITE

The Perseverance rover

Which feat did the rover get Perseverance on Mars?

It produced oxygen from the atmosphere. The Local Oxygen Resources Utilization Experiment (MOXIE) of Perseverance produced 50g of oxygen in 7 cycles, between February and December 2021. Production was as good at night as it was during the day, NASA says in Science this week. MOXIE filters the Martian atmosphere, which contains 95% CO2compresses it, heats it to 800 ° C, then electrolyses it to separate carbon and oxygen from CO2. MOXIE’s technology is efficient enough to be used on a human mission.

The number


PHOTOS FROM THE CHINESE ACADEMY OF SCIENCES WEBSITE

Aerial view of a portion of the DSRT

3 km

This is the circumference of a radio telescope under construction in China, which aims to study flare and sunspots. Each of its 313 domes will have a diameter of 6m. This solar radio telescope called Daochen (DSRT) is located on a plateau in Sichuan province. It is part of Meridian, a larger system for studying the space environment that will eventually include 300 instruments at 31 sites, the Chinese Academy of Sciences said in a statement in July. Another solar radio telescope, the Chinese Spectral Radioheliograph, which is under construction in Mongolia, is part of Meridian.

The exploits of the megalodon


IMAGE PROVIDED BY THE UNIVERSITY OF ZURICH

Artist’s impression of a megalodon hunting an orca

Megalodon, a 15-meter giant shark that ruled the oceans millions of years ago, was even larger than previously thought, according to a new study by a specialist in this species, working at the University of Zurich. The megalodon could specifically swallow an orca in five mouthfuls. It was also three to four times faster than modern sharks, allowing it to migrate tens of thousands of miles to find areas rich in prey. The megalodon appeared 26 million years ago and disappeared 2.6 million years ago, probably due to climate change and the merger of the two Americas. The modeling study was published in Science advances at the end of August.

Robots in convenience stores


PHOTOS FROM THE TELEXISTENCE SITE

The TX SCARA

The refrigerators of the Japanese convenience store chain FamilyMart have been filled by robots since this summer. A partnership announced by FamilyMart with robotics company Telexistence is testing the TX SCARA (Selective Assembly and Compliance Robotic Arm) precision logistics robot in 300 convenience stores in Tokyo. TX SCARA would have to operate autonomously 98% of the time, alleviating labor shortages. If the test works, the other 16,000 FamilyMart convenience stores will be equipped with TX SCARA, which Telexistence would like to implement in the United States.

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