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Key Takeaways

1. Plastics release harmful chemicals that disrupt hormones, metabolism, fertility, and brain development.
2. The health costs from plastic pollution could reach 15 trillion US dollars due to chronic diseases affecting future generations.
3. The United Nations is developing a Global Plastics Treaty to limit plastic production and ban dangerous substances.
4. Public health experts stress that recycling alone is not enough; a significant reduction in plastic production is needed.
5. Corporate lobbyists are resisting change by promoting ineffective solutions, risking the effectiveness of the Global Plastics Treaty.

A growing amount of medical studies show that plastics are releasing many dangerous chemicals, including phthalates, bisphenols, and PFAS. These substances disrupt hormones, metabolism, fertility, and brain development. The Minderoo-Monaco Commission estimates that the total health costs related to plastic pollution could reach 15 trillion US dollars due to chronic diseases and toxic effects across generations. Experts argue that the levels of exposure we see today, particularly in children and other at-risk groups, are simply not acceptable.

Global Action Needed

To tackle these dangers, the United Nations is working on a Global Plastics Treaty, which aims to set limits on plastic production and ban harmful substances internationally. Public health professionals, medical groups, and non-governmental organizations are urging for quick, enforceable actions. They warn that the health crisis is growing quicker than what environmental regulators can manage. They emphasize that just recycling is not sufficient; there needs to be a significant decrease in plastic production.

Industry Resistance

Even with broad medical agreement, corporate lobbyists from the petrochemical and packaging sectors are pushing back. By advocating for voluntary agreements and untested methods like chemical recycling, groups such as the American Chemistry Council are trying to stall real progress. If there isn’t strong enforcement, the treaty might just end up being another empty promise, while the health impacts from not taking action keep piling up.

Key Takeaways

1. The Perseid meteor shower peaks on the night of August 12 and into the morning of August 13, with 50 to 100 meteors expected per hour.
2. This year, a nearly full Moon will hinder visibility, making it difficult to see most meteors, except for the brightest ones.
3. Stargazers will need to wait until December for the Geminids meteor shower, which offers better viewing conditions without moonlight interference.
4. August features other skywatching highlights, including the close conjunction of Venus and Jupiter on the 11th and 12th, and visibility of the Dumbbell Nebula (Messier 27) in the first half of the night.
5. Mars and Saturn are also visible in August, with Mars appearing low in the western sky in the evenings and Saturn visible from late night to dawn in the eastern sky near Cassiopeia and Andromeda.

The Perseids are set to be the highlight of the meteor shower season, peaking on the night of August 12 and into the morning of August 13. This stunning display occurs when remnants from Comet 109P/Swift-Tuttle collide with Earth’s atmosphere, creating brilliant streaks of light known as meteors. These meteors seem to come from the constellation Perseus, which is how the shower got its name.

Stargazers’ Anticipation

Typically, people who enjoy watching the stars get excited for the Perseids because they can expect to see between 50 to 100 meteors every hour. Sadly, this year the Moon will be almost full during the peak nights.

The brightness of the Moon will light up the sky, making it hard to catch sight of most meteors. Observers of the Perseids may only be able to spot the brightest ones. With this year’s much-anticipated meteor shower not living up to expectations, star enthusiasts will have to wait until December for the Geminids, which promise great viewing conditions without moonlight interference.

Other August Highlights

August is also packed with other skywatching opportunities. The two brightest planets, Venus and Jupiter, will be shining brightly in the eastern sky before dawn all month long. They will come close together on the 11th and 12th, only a degree apart. On the mornings of the 19th and 20th, a thin crescent Moon will rejoin the duo after they have moved further apart.

This month, the Dumbbell Nebula, also known as Messier 27, can be spotted in the sky during the first half of the night with either binoculars or a small telescope. It can be found within the Summer Triangle, which is made up of the stars Altair, Deneb, and Vega.

Planets in View

Mars and Saturn also play a part in August’s celestial display. Mars can be seen low in the western sky as a solitary planet during early evening hours. Saturn becomes visible from late night until dawn, gradually rising a bit earlier each night and appearing in the East near the constellations Cassiopeia and Andromeda.

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Key Takeaways

1. Dr. John V. Sandusky from Sandia National Laboratories is repurposing heliostat fields, typically used for solar energy, to track near-Earth asteroids and lost spacecraft at night.

2. The innovative tracking method focuses on detecting frequency shifts in starlight reflected off moving objects instead of using traditional imaging techniques.

3. Initial testing at the National Solar Thermal Test Facility confirmed the precision of heliostat adjustments, although no asteroids were detected during the trial.

4. This approach could enhance existing systems like NASA’s Atlas for asteroid detection and improve tracking capabilities in cislunar space.

5. Heliostats are cost-effective and mass-produced, making them suitable for continuous sky observation during nighttime when they would otherwise remain idle.

A researcher from Sandia National Laboratories is looking into a rather unusual application for heliostat fields, which are groups of mirrors normally utilized for solar thermal energy. He aims to adapt these systems during the night to identify near-Earth asteroids and lost spacecraft in cislunar space. Dr. John V. Sandusky shared this innovative concept at the 2024 Optical Engineering + Applications conference.

A New Tracking Method

Instead of using standard imaging techniques, Sandusky’s approach focuses on monitoring frequency shifts in starlight that is reflected. As the heliostats track the paths of stars, any object, such as an asteroid, that moves relative to those stars will create a detectable frequency shift. He mentioned that “even shifts as tiny as one-millionth of a cycle per second can be detected.”

Testing the System

During a trial at the National Solar Thermal Test Facility, Sandusky operated one of the 212 heliostats to bounce back starlight, demonstrating that it could adjust with the necessary precision. Although the test did not result in the detection of an asteroid, the main aim was to confirm the reliability of the control system and the overall methodology.

A Scientific Night Shift

In essence, this proposal could provide a scientific “night job” for otherwise idle heliostat arrays, particularly to enhance current systems like NASA’s Atlas, which consists of telescopes aimed at identifying near-Earth asteroids. Sandusky thinks that this same technique might also aid in tracking spacecraft in the challenging region between Earth and the Moon.

Heliostats are relatively affordable when compared to telescopes and are already mass-produced, making them valuable for continuous sky observation. “Solar thermal mirrors just sit there at night,” Sandusky pointed out. “We might as well make use of them.”

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Key Takeaways

1. Researchers created a mechanical adhesive system, MUSAS, inspired by the suction organ of remoras (sucker fish) for use on soft and slippery surfaces.
2. MUSAS features tiny microneedles made from a shape-memory alloy that interlock with tissue when heated, forming a strong bond.
3. The system shows potential for drug delivery, enabling controlled release of medications, such as HIV treatment, directly into the stomach lining.
4. MUSAS can be used as a diagnostic tool, with successful tests monitoring gastroesophageal reflux disease (GERD) in animal models.
5. The technology has applications in environmental science, including attaching sensors to live fish for real-time monitoring of water temperature.

Researchers have created a new mechanical adhesive system that imitates the strong suction organ found in remoras, also known as sucker fish. This innovative system, described in the journal Nature, can adhere to soft and slippery surfaces for extended periods, addressing a significant challenge in areas such as medicine and environmental science.

Development of MUSAS

The team from MIT designed this device, named MUSAS (Mechanical Underwater Soft Adhesion System), by studying the distinctive anatomy of the remora. It features a primary suction disc along with several smaller compartments to grip uneven surfaces effectively. The main advancement of this system lies in its tiny microneedles crafted from a shape-memory alloy. These needles, when they come into contact with body heat, gently interlock with tissue, forming a robust and dependable bond that remains secure.

Potential for Drug Delivery

This technology could vastly change how drugs are delivered. In tests on animals, the device was able to stick to the lining of the stomach, enabling a week-long, controlled release of the HIV medication cabotegravir. This might someday provide a substitute for daily pills or frequent injections. Furthermore, the researchers demonstrated its ability to deliver RNA drugs directly into the stomach lining tissue, bypassing the digestion problem before reaching the target site.

Diagnostic Applications

The device also holds promise as a diagnostic tool. When fitted with an impedance sensor, it managed to adhere to the esophagus in an animal model, monitoring for gastroesophageal reflux disease (GERD). This could offer a much more pleasant alternative to existing GERD sensors, which typically involve inserting a tube through the nose or mouth of a patient.

Furthermore, the team showcased the device’s applications in animal and environmental sciences. They successfully attached a temperature sensor to a live fish, allowing for precise monitoring of water temperature as the fish swam rapidly. The researchers are now focused on refining the platform for additional applications, such as the delivery of vaccines in clinical environments.

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