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Senescent cells dodge cell death by rewiring fat metabolism, study shows

In response to stress or damage, cells undergo senescence and stop dividing. However, if senescent cells accumulate in tissues over the long term, chronic inflammation occurs and the risk of cancer increases. Researchers at the German Cancer Research Center (DKFZ) have now discovered a previously unknown mechanism by which senescent cells protect themselves from oxidative stress and a specific form of cell death known as ferroptosis.

In the long term, these findings could provide new avenues for cancer therapies and the treatment of age-related diseases. The research is published in the journal Cell Death & Differentiation.

Senescence occurs when cells respond to stress or harmful changes and permanently cease their growth. This process is considered a protective mechanism against cancer. For example, cells that carry an oncogene permanently activated by mutations are effectively “frozen” before they can proliferate uncontrollably—a biological emergency program. However, problems arise when senescent cells accumulate in tissue, where they promote chronic inflammation and thus facilitate tumor development. Scientists are therefore searching for ways to eliminate senescent cells before they can cause harm.

50 Best Cybersecurity Keynote Speakers in the USA

IntroductionIf you are searching for the best cybersecurity keynote speakers in the USA, you already know the challenge. Most lists recycle the same handful of well-known names, without telling you which speaker actually fits your audience, your industry, or your budget. This directory changes that. Every person included has been selected based on substantive cybersecurity credentials, demonstrated speaking impact, and active contribution to the field in 2025 and 2026.The stakes have never been

Precognition, Retrocausation, and the Unconscious with Eric Wargo

Eric Wargo, PhD, is author of Time Loops: Precognition, Retrocognition, and the Unconscious. He is an anthropologist and science writer. His blog is http://thenightshirt.com/.

Here he defines time loops as akin to self-fulfilling prophecies. He asserts that they could be the very basis of the creative process. He explains that retrocausation is to physics what precognition is to parapsychology. He explores the social and psychological dynamics associated with the notion of premonitions. He reviews the experiment in time of J. W. Dunne suggesting that dreams contain much information seemingly derived from the future. He applies Dunne’s methology to dreams of Sigmund Freud.

New Thinking Allowed host, Jeffrey Mishlove, PhD, is author of The Roots of Consciousness, Psi Development Systems, and The PK Man. Between 1986 and 2002 he hosted and co-produced the original Thinking Allowed public television series. He is the recipient of the only doctoral diploma in \.

New solar desalination breakthrough makes fresh water without toxic brine

Scientists have developed a solar desalination system that turns seawater into drinking water without creating environmentally damaging brine. Special laser-textured metal panels use sunlight to evaporate water while automatically moving salt deposits away from the working surface, preventing clogging. The process was successfully tested with water from three oceans and can recover nearly all salts as solids. Those leftover materials could even become a source of valuable lithium for batteries.

New propulsion system could make tiny satellites both fast and fuel-efficient

MIT engineers are testing a new propulsion system that combines the power and speed of conventional chemical thrusters with the precision and fuel-efficiency of electrical thrusters.

The system could enable the design of nimbler, more flexible small satellites, which could perform both fast, powerful maneuvers and slower, precise adjustments, depending on the mission and moment at hand.

The key to the new system is a special propellant that can power both chemical and electrical thrusters, which traditionally have required separate, bulky fuel sources.

Sorting out a dielectric mismatch boosts perovskite/silicon tandem solar cells’ efficiency and durability

Solar cells, devices that can convert sunlight into electricity, are now widely used in many countries and are contributing to the reduction of greenhouse gas emissions on Earth. While most of the solar cells on the market today are based on silicon, energy engineers have been exploring the potential of other photovoltaic materials, including a class of materials known as perovskites.

Perovskites are materials with a characteristic crystal structure; the same structure of the mineral calcium titanium oxide CaTiO3. A promising solar cell design introduced over the past decades entails the stacking of silicon and perovskite layers to produce so-called tandem cells, a type of photovoltaics that can capture a broader range of the solar spectrum than single-layer solar cells.

Perovskite/silicon solar cells have been found to exhibit remarkable power conversion efficiencies, which essentially means that they convert a higher percentage of sunlight into electricity. Nevertheless, under some conditions (e.g., when they are situated in partly shaded areas) their performance tends to rapidly degrade over time.

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