Science Daily

• A new treasure map reveals where Earth's lost prehistoric life may be hiding

  A sweeping analysis of 540 million years of marine fossils has revealed surprising gaps in our understanding of Earth's ancient life. Scientists discovered that some of the greatest opportunities for finding previously unknown species lie in relatively recent geological periods, rather than the distant past. By mapping unexplored fossil-rich regions around the world, researchers have created a powerful tool to guide future excavations.

• Crows can make decisions twice as fast as humans, scientists discover

  Crows may be even smarter than we thought, and their brains are astonishingly fast. Researchers at the University of Tübingen discovered that crows can make visual decisions twice as quickly as humans and monkeys, taking just 235 milliseconds on average to identify the direction of moving dots while maintaining remarkable accuracy.

• Where are all the males? Ancient human fossils reveal a startling mystery

  A remarkable discovery in a South African cave suggests that an extinct human relative may have created an all-female burial site more than 240,000 years ago. Scientists analyzed ancient proteins preserved in Homo naledi teeth and found no male-specific markers among at least 20 individuals, potentially solving a mystery that has puzzled researchers for over a decade.

• A butterfly that fooled scientists for 200 years finally reveals its secrets

  Researchers have discovered that a familiar tropical butterfly actually belongs to three nearly identical species, including one previously unknown to science. Hidden ultraviolet wing patterns and DNA differences revealed the truth, leaving scientists puzzled about how the butterflies remain genetically separate despite living side by side.

• NASA reveals Earth's ozone hole has grown to a size not seen in a decade

  The Antarctic ozone hole expanded to its seventh-largest size on record in 2026, driven by unusual weather conditions that pushed it close to its historic maximum. Scientists say international restrictions on ozone-destroying chemicals prevented even greater damage, and Earth's protective ozone layer is still recovering.