Scientists have demonstrated a new method for counting whales from space.科学家展示了一种从太空中计算鲸鱼数量的新方法。It uses very high-resolution satellite pictures and im...
When most people envision crocodiles and alligators, they think of them waddling（摇摆蹒跚） on the ground or wading in water -- not climbing trees. However...
Birds that hoard（贮藏） food for a rainy day better be sure that there are no great tits around to spy on where they hide their reserve of seeds and nuts...
White rhinoceros（犀牛） may be extinct in twenty years with the current poaching rates. The loss of this megaherbivore is in itself a tragedy, but it may...
Astronomers know that while large stars can end their lives as violently cataclysmic supernovae, smaller stars end up as planetary nebulae（行星状星云） -- c...
The rapid conversion of natural lands to cement-dominated urban centers is causing great losses in biodiversity. Yet, according to a new study involvi...
A team of French and Swedish researchers have presented new fossil evidence for the origin of one of the most important and emotionally significant pa...
They lived in America about 13,000 years ago where they hunted mammoth（猛犸象）, mastodons（乳齿象） and giant bison with big spears. The Clovis people were no...
The bench-scale test widely used to evaluate whether a burning cigarette will ignite（点燃） upholstered furniture may underestimate the tendency of compo...
Micro-machining could be used to create almost flat, Fresnel lenses, that boost the electrical efficiency of solar panels, according to researchers in...