Science Daily

1. Ancient oceans stayed oxygen rich despite extreme warming

   Scientists studying ancient ocean fossils found that the Arabian Sea was better oxygenated 16 million years ago, even though the planet was warmer than today. Oxygen levels only plunged millions of years later, after the climate cooled, defying expectations. Powerful monsoons and ocean circulation appear to have delayed oxygen loss in this region compared to the Pacific. The discovery suggests future ocean oxygen levels may not follow a simple warming-equals-deoxygenation rule.

2. A breakthrough that turns exhaust CO2 into useful materials

   Scientists have created a device that captures carbon dioxide and transforms it into a useful chemical in a single step. The new electrode works with realistic exhaust gases rather than requiring purified CO2. It converts the captured gas into formic acid, which is used in energy and manufacturing. The system even functions at CO2 levels found in normal air.

3. Tiny mammals are sending warning signs scientists can finally read

   Small mammals are early warning systems for environmental damage, but many species look almost identical, making them hard to track. Scientists have developed a new footprint-based method that can tell apart nearly indistinguishable species with remarkable accuracy. Tested on two types of sengi, the system correctly identified them up to 96% of the time. It offers a simple, ethical way to monitor ecosystems before they quietly unravel.

4. This spider’s “pearl necklace” was living parasites

   What looked like a pearl necklace on a tiny spider turned out to be parasitic mite larvae. Scientists identified the mites as a new species, marking the first record of its family in Brazil. The larvae attach to juvenile spiders and feed on lymph through a weak spot in the spider’s body. The discovery came from long-stored specimens, suggesting many more species remain hidden in collections.

5. A century-old Stonehenge mystery may finally be solved

   Scientists have found compelling new evidence that humans, not glaciers, brought Stonehenge’s bluestones to the site. Using advanced mineral analysis, researchers searched nearby river sediments for signs glaciers once passed through the area—and found none. That missing signature strongly suggests the stones were intentionally moved by people. How they did it remains a mystery, but ice is now largely ruled out.