Nuclear Power & Space Tech: Chinese researchers report a carbon-14 “nuclear battery” that could run for thousands of years, with potential uses from medical implants to remote sensors and space probes. Deep Earth & Oceans: Scientists confirm Earth’s oldest known asteroid impact crater in Western Australia (about 3.02 billion years old) and also map 73 likely new submarine volcanic calderas using a Mars-style detection method. Climate & Ecology: Brazil’s Amazon deforestation is at its lowest level in a year, with enforcement credited for the slowdown, while a long-running soil warming experiment suggests even “stable” soil carbon can start breaking down as temperatures rise. Health & Brain Science: A new study flips the script on Alzheimer’s tau, showing it helps healthy brains form long-lasting memories, and another report links early-onset dementia diagnosis improvements to better detection. Space Exploration: NASA astronaut Anil Menon begins his first ISS mission, planning about 240 days of experiments. Science Policy & Ethics: A week of debate continues over how to enforce environmental rules versus watering them down, and over how AI is changing audit readiness for finance teams. Biotech & Business: DOE-backed tech licensing aims to extract uranium from seawater at industrial scale, while new drug and device updates span HIV prevention rings, dialysis access vessels, and CNS cancer monitoring.