Lifeboat Foundation

Experiments indicate that bees have surprisingly rich inner worlds.

The CD was initially soaked in 40 mL of acetone for 1.5 minutes, releasing the metal layer by breaking down the polycarbonate substrate. The metal from the CD was easily harvested with polyimide tape, which also serves as the substrate layer in the new device integration to improve the mechanical durability and robustness of the thin metal film.

“When you pick up your hair on your clothes with sticky tape, that is essentially the same mechanism,” said Assistant Professor Ahyeon Koh, who led the research. “We loosen the layer of metals from the CD and then pick up that metal layer with tape, so we just peel it off. That thin layer is then processed and flex ible.”

Researchers created the sensors utilizing a commercially available Cricut cutter, an off-the-shelf machine for crafters that generally cut designs from materials like paper, vinyl, card stock, and iron-on transfers. The flexible circuits then would be removed and stuck onto a person. The whole fabrication process was completed in 20–30 minutes, without releasing toxic chemicals or needing expensive equipment, and it costs about $1.50 per device.

SpaceX shared how it’s making its Starlink satellites less bright. The space exploration company published a document titled, Brightness Mitigation Best Practices for Satellite Operators that outlines how it’s working with the astronomy community to reduce light pollution.

New document from @SpaceX https://api.starlink.com/public-files/BrightnessMitigationBe…rators.pdf explaining what they have been doing to make their satellites less bright. I applaud SpaceX for their work on this (and for making the document public), while remaining concerned to see how bright the Gen2 Starlinks end up being.

— Jonathan McDowell (@planet4589) July 29, 2022

Researchers discovered that lunar pits and caves could provide stable temperatures around 63 degrees Fahrenheit, leading to new possibilities for experiments and life there.

It was difficult for people to guess whether philosophical responses came from the philosopher Daniel Dennett or the language generator GPT-3.

Nowadays, the development of renewable energy sources, such as wind, solar, and nuclear energy sources, has become imperative, due to the limited resource constraints of the traditional fossil fuels [1 ]. However, these renewable sources could not deliver a regular power supply as the sources are variable in time and diffuse in space. Thus, the focus has been shifted to the electrical energy storage to smooth the intermittency of the energy sources. Rechargeable battery has the ability to store chemical energy and convert it into electrical energy with high efficiency [ 2]. Lithium-ion battery (LIB), as one typical rechargeable electrochemical battery, has dominated the markets of portable electronic devices, electric vehicles, and hybrid electric vehicles in the past decades, due to its high output voltages, high energy densities, and long cycle life; even though the high cost and the shortage of lithium resources are inhibiting the application of LIB in large-scale energy storage [[3], [4], [5], [6], [7], [8], [9]].

Sodium-ion battery (SIB) is one promising alternative to LIB, with comparable performance to that of LIB, abundant sodium resources and low price of starting materials [[10], [11], [12], [13]]. As Na atom is heavier and larger than those of Li atom, the gravimetric and volumetric energy density of Na-ion battery are expected to not exceed those of the Li analogues [14]. However, energy density would not be considered as the critical issue in the field of large-scale grid support, for which the operating cost and the battery durability are the most important aspects [15,16].

Li-Ion battery research concentrates mainly on increasing energy density, but TyFast goes in the opposite direction. The company compromises battery capacity to offer insanely fast charging and a long life cycle.

These black holes are not absorbing matter from a nearby star, making them incredibly hard to find.

NEW YORK (AP) — Officials in New York City declared a public health emergency due to the spread of the monkeypox virus Saturday, calling the city “the epicenter” of the outbreak.

The announcement Saturday by Mayor Eric Adams and health Commissioner Ashwin Vasan said as many as 150,000 city residents could be at risk of infection. The declaration will allow officials to issue emergency orders under the city health code and amend code provisions to implement measures to help slow the spread.

In the last two days, New York Gov. Kathy Hochul declared a state disaster emergency declaration and the state health department called monkeypox an “imminent threat to public health.”