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澳大利亚神秘岩画揭开面纱
澳大利亚 神秘岩画 揭开面纱 舞蹈人像
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2020/2/10
1891年，在澳大利亚西北部金伯利地区的一处岩石上，迷路的牧场主Joseph Bradshaw偶然发现了一些桑葚色的舞蹈人像。Joseph被迷住了，这些岩画与他从前见过的完全不同。从那时起，这些如今被称为Gwion的纤细、精致的岩画人像，一直困扰着考古学家。他们既不知道这些画作的年代，也不清楚岩画的作者。让人没想到的是，黄蜂窝揭开了这些秘密。近日，科学家利用岩画附近黄蜂窝化石中微小的木炭，为这些画...
Volcanic activity did not play a direct role in the mass extinction event that killed the dinosaurs, according to an international team of researchers. It was all about the impact of an asteroid, the ...
New research provides evidence of strong early magnetic field around Earth（图）
New research evidence strong early magnetic field around Earth
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2020/2/20
Deep within Earth, swirling liquid iron generates our planet's protective magnetic field. This magnetic field is invisible but is vital for life on Earth's surface: It shields the planet from harmful ...
Shocked meteorites provide clues to Earth's lower mantle（图）
Shocked meteorites provide clues Earth lower mantle
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2020/2/20
Deep below Earth's surface lies a thick rocky layer called the mantle, which makes up the majority of our planet's volume. While Earth's mantle is too deep for humans to observe directly, certain mete...
Scientists find oldest-known fossilized digestive tract — 550 million years（图）
Scientists oldest-known fossilized digestive tract 550 million years
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2020/1/19
A 550-million-year-old fossilized digestive tract found in the Nevada desert could be a key to understanding the early history of animals on Earth.More than a half-billion years ago, life on Earth con...
美国发现世界最古老森林遗迹
美国 世界 最古老 森林遗迹
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2020/1/4
一个国际团队近日在美国《当代生物学》杂志网络版上报告说，他们在美国纽约州东南部发现了距今约3.86亿年的古森林化石遗迹，这是迄今发现的世界上最古老森林的遗迹。美国纽约州立大学宾厄姆顿分校和英国加的夫大学等机构研究人员组成的团队说，他们在纽约州东南部距今约3.86亿年的古生代泥盆纪中期地层中发现了这处古森林遗迹。距离此处40公里的一处森林遗迹此前被科学家认为是“最古老的”，而新发现的遗迹还要早300...
Chemists find path to 'new blue' in meteorite minerals（图）
Chemists path new blue meteorite minerals
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2020/1/4
Scientist Mas Subramanian of Oregon State University, who made history a decade ago with the accidental discovery of the first new blue inorganic pigment in more than two centuries, is again pushing f...
元素周期表：探究物质世界奥秘的一把金钥匙
元素周期表 物质世界奥秘 金钥匙
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2019/12/30
联合国大会宣布2019年为国际化学元素周期表年，旨在纪念俄罗斯化学家门捷列夫在150年前发表元素周期表这一科学发展史上的重大成就。世界万物是由什么最基本的物质构成的？这些最基本的物质又是怎样变成万物世界的？这是人类一直好奇并致力于破解的物质世界奥秘。150年前，门捷列夫发现了元素周期律并发表了元素周期表，成为打开物质世界奥秘之门的一把金钥匙。
日本研究人员在新一期英国《通讯-生物学》杂志上发表论文说，在日本福井县发现了距今约1.2亿年的鸟类化石，它拥有之前发现的类似时期鸟类化石中没有的尾综骨，有助于人们了解早期鸟类演化情况。
Fossils may need air to form（图）
Fossils air to form
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2019/11/15
Some of the world's most exquisite fossil beds were formed millions of years ago during time periods when Earth's oceans were largely without oxygen.That association led paleontologists to believe tha...
Utah's red rock metronome（图）
Utah red rock metronome
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2019/10/17
At about the same rate your heart beats, a Utah rock formation called Castleton Tower gently vibrates, keeping time and keeping watch over the sandstone desert below. Swaying like a skyscraper, the re...
An ancient desert covered in sand dunes as far as the eye could see, where dinosaurs and small mammals once roamed, may have been the real Jurassic Park. Today, the Navajo Sandstone, as it's called, i...
Study explores how rock expands near soil surface in Sierra Nevada（图）
rock expands soil surface Sierra Nevada
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2019/10/18
A University of Wyoming researcher and his team have discovered that weathering of subsurface rock in the southern Sierra Nevada Mountains of California is due more to rocks expanding than to chemical...
Extinct Caribbean bird yields DNA after 2,500 years in watery grave（图）
Extinct Caribbean bird yields DNA 2,500 years watery grave
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2019/10/21
Scientists have recovered the first genetic data from an extinct bird in the Caribbean, thanks to the remarkably preserved bones of a Creighton's caracara in a flooded sinkhole on Great Abaco Island i...
Clues found on how soils may respond to climate change（图）
how soils respond climate change
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2019/10/22
Rock core samples from a period of warming millions of years ago indicate that soils contributed to a rapid rise in atmospheric greenhouse gases and suggest that modern climate models may overestimate...