科学与环境
A butterfly that fooled scientists for 200 years finally reveals its secrets
来源: All Top News -- ScienceDaily · 发布于
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 butter
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.
相关报道
Scientists find deadly virus DNA hidden in 1,000-year-old manuscripts
Ancient manuscripts, including the 1,000-year-old York Gospels, have revealed traces of a deadly sheep virus whose history stretches back more than 3,700 years. Scientists discovered that the virus has remained remarkably unchanged for millennia, turning historic parchment into a
All Top News -- ScienceDaily ·
Scientists discover a bacterial defense so strange they thought it was broken
Scientists have discovered a bizarre bacterial defense system that works almost completely backward from anything seen before. Unlike typical bacterial immune systems that keep a deadly toxin under control until a virus attacks, this unusual mechanism waits until an infection beg
All Top News -- ScienceDaily ·
Scientists reveal a hidden snakebite crisis killing up to 513,000 people a year
A startling new study suggests that venomous snakebites are killing far more people worldwide than official statistics indicate, with an estimated 274,000 to 513,000 deaths every year. Researchers found that as many as 7 million people could suffer snake envenoming annually, whil
All Top News -- ScienceDaily ·
Scientists discover a hidden 100-million-year-old volcanic system
Scientists have uncovered a long-lost volcanic system in Iran that dates back roughly 100 million years, revealing a hidden chapter in Earth's tectonic history. The discovery sheds new light on the disappearance of an ancient ocean and the powerful geological forces that reshaped
All Top News -- ScienceDaily ·
Scientists discover the immune system’s hidden sense of touch
Scientists at McGill University have discovered a surprising new ability of immune cells that could change how we understand long-term immunity. Researchers found that T cells can actually sense how stiff their surrounding tissues are, using these physical signals to help determi
All Top News -- ScienceDaily ·