Category Archives: Science

Shark Attacks in U.S. Total 28 So Far This Year

Unprovoked bites, while rare, have been raising the alarm for some beachgoers this summer

Sources: Florida Museum of Natural History (1837-2021); trackingsharks.com (2022 data from media reports)

Brownie Bytes Take: As a surfer with 40 years experience in Florida, New Smyrna Beach has the most shark bites and sharks in the surfline than anywhere else. I’ve been bumped, chased, and seen others bitten there in 3 ft. of water right along the shore. Even though the blacktip shark migration during the late Fall and Winter happens in S. Florida with 10,000 sharks per mile per day cruising near the coast, they rarely bother anyone.

– R. Michael Brown

News of shark attacks off the coast of New York’s Long Island this summer raised the alarm for many beachgoers, surfers and divers. Shark bites, although rare compared with the number of people who get into the ocean, still happen in coastal areas of the U.S.

According to Tracking Sharks, a website that specializes in reporting shark attacks and bites across the globe, there have been 28 shark attacks in the U.S. in 2022 as of Aug. 1. Two of the attacks were provoked and none was fatal.

There were 47 confirmed cases in 2021, returning to prepandemic levels, and 33 in 2020.

Unprovoked shark bites are the most common incidents, according to the Florida Museum of Natural History’s International Shark Attack Files, a global compilation of all known shark attacks. Florida leads the U.S. in shark attacks, followed by Hawaii, California and South Carolina.

The most frequent type of unprovoked bites are so-called “hit and run” attacks, the museum says. These normally happen in the surf zones as coastal shark species follow schools of fish close to shore. There, sharks can encounter swimmers and surfers—and sometimes confuse people with their usual prey. The sharks don’t return after inflicting a single bite or slash wound.

Shark attacks and deaths from shark bites are extremely rare, experts say. The yearly average of unprovoked shark bites globally is 70, resulting in about 5 deaths, data from the Florida Museum of Natural History shows.

See More [Wall Street Journal] Subscription May Be Required

Suzanne Lee: Why “biofabrication” is the next industrial revolution | TED Talk

TED Talk Subtitles and Transcript: What if we could “grow” clothes from microbes, furniture from living organisms and buildings with exteriors like tree bark? TED Fellow Suzanne Lee shares exciting developments from the field of biofabrication and shows how it could help us replace major sources of waste, like plastic and cement, with sustainable and eco-friendly alternatives.
— Read on www.ted.com/talks/suzanne_lee_why_biofabrication_is_the_next_industrial_revolution/transcript

Europe’s tallest active volcano has been spewing lava for three weeks — and now its raining stones and ash on the villages below

Italy’s famed active volcano, Etna, has been spewing lava for over three weeks. On Sunday, March 7, the fiery mountain on the eastern coast of Sicily let out its tenth big blast of the season since February 16. Only this time, it also rained down ash and small lava stones on the town nearby.

At nearly 3,324 meters above sea level, Etna is the tallest active volcano in Europe. According to Italy’s National Institute of Geophysics and Volcanology ( INGV), the giant exploded at approximately 2:00 am local time, pushing the column of ash and lava to a height of 10,000 metres.

The lava down below did not change direction and continues to flow from the southeast crater — down the side of the volcano that does not house any residents.

See More [Business Insider]

Sustainable Deepwater Fish Farms Breed ‘Sushi-Grade Fish’ and Could Replenish Depleted Wild Stocks

Sustainable deepwater fish farms could propel the fishing industry into a new direction and in an “environmentally responsible manner” by replenishing depleted wild stocks that have been affected by overfishing and pollution.

Marine biologist Neil Sims is helping to spearhead this initiative with Hawaii-based Ocean Era (formerly Kampachi Farms), a start-up that’s established offshore.

Ocean Era breeds “sushi-grade fish” in pens 230 feet and almost 4 miles (70 meters deep, 6 km) from the coast. Currently, aquaculture (the farming of fish, seafood and aquatic plants) already accounts for about half the fish eaten worldwide. However, these fish farms are typically located in coastal waters where the fecal waste produced by the fish, and chemicals used in the farming process potentially impacts the environment.
— Read on www.techthatmatters.com/these-sustainable-deepwater-fish-farms-breed-sushi-grade-fish-and-could-replenish-depleted-wild-stocks/

Really 2020? Enough is Enough. Atlantic 5-Day Tropical Weather Outlook

The National Hurricane Center is into Greek names at this point because of so many storms. The latest is Gamma. Come on 2020 – give us a break! Atlantic 5-Day Graphical Tropical Weather Outlook
— Read on www.nhc.noaa.gov/gtwo.php

This High-Tech, Expandable ‘Mobile Hospital’ Has a COVID-19 Isolated Clinic Space

Given the unpredictability of COVID-19 and rising hotspots across the U.S., the CT Defense Mobile Medical Unit could lessen the constraint put on hospitals – and save more lives.

Created by CT Defense and distributed by Elavo, this state-of-the-art mobile hospital is a 12-bed mobile ICU that features HEPA filtered climate control, which prevents the spread of infectious diseases.

The unit stands out from the rest due to its advanced sanitization entrance/exit that protects health workers and the community. It has expandable sides that almost doubles the clinic space
— Read on www.techthatmatters.com/this-high-tech-expandable-mobile-hospital-has-a-covid-19-isolated-clinic-space/

Fire-Fighting Rescue

This is the Colossus, a robust fire-fighting robot by Shark Robotics that was developed with Paris firemen, the Brigade de Sapeurs-Pompiers. This multi-purpose support robot for operations in high-risk areas helped extinguish the ferocious Notre Dame blaze that occurred on April 15, 2019.

While it may seem small in size, this fire-fighting beast lives up to its name. Considered to be “the most powerful electric robot in the world,” the Colossus is amazingly resistant to thermal radiation (up to 900 ° C). It can also run up to 12 hours in an operational situation and has a carrying capacity of up to 500 Kg.

Its integration is also impressive. In less than 30 seconds, the Colossus’ functions are interchangeable by a single operator without the use of tools. Super easy to use, the Colossus sets up quickly and is a low-maintenance robot that has proven to save lives as well as beloved historic structures.

— Read on www.techthatmatters.com/category/rescue/

We Finally Know How Much Radiation There Is on The Moon, And It’s Not Great News

As the US prepares to return humans to the Moon this decade, one of the biggest dangers future astronauts will face is space radiation that can cause lasting health effects, from cataracts to cancer and neurodegenerative diseases.

Though the Apollo missions of the 1960s and 1970s proved it was safe for people to spend a few days on the lunar surface, NASA did not take daily radiation measurements that would help scientists quantify just how long crews could stay.

This question was resolved Friday after a Chinese-German team published in the journal Science Advances the results of an experiment carried out by China’s Chang’E 4 lander in 2019.

“The radiation of the Moon is between two and three times higher than what you have on the ISS (International Space Station),” co-author Robert Wimmer-Schweingruber, an astrophysicist at the University of Kiel told AFP.

“So that limits your stay to approximately two months on the surface of the Moon,” he added, once the radiation exposure from the roughly week-long journey there, and week back, is taken into account.

See More (Science Alert):

https://www.sciencealert.com/scientists-predict-how-long-humans-can-survive-radiation-on-the-moon

This ‘DroneGun’ Takes Down Unwanted Drones with Radio Frequencies Instead of Bullets

This is the DroneGun Tactical made by Droneshield that provides a safe countermeasure against a wide array of drone models. The DroneGun takes down unwanted drones by shooting radio frequencies instead of bullets. It’s a one-man operated rifle used as a military defense that has an effective range of one mile.

The battery-powered, single-rifle DroneGun allows for controlled management of explosive-carrying drones without damaging common drone models or the surrounding environment.
— Read on www.techthatmatters.com/this-dronegun-takes-down-unwanted-drones-with-radio-frequencies-instead-of-bullets/