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加拿大发现最古老松树化石（图）
加拿大 最古老松树化石
2016/3/14
科学家在加拿大一个采石场发现了一块距今1.4亿年前的松树化石，这是距今为止最古老的松树化石。这块烧焦的树枝在此前松针发芽的地方有一个小断层，分析表明这块木材的内部此前曾输送过树脂胶。这块化石直径仅有半厘米，研究人员在用酸溶解加拿大新斯科舍省石膏采石场的一块岩石样本时发现了它，相关成果近日发表于《地质学》。
气候变化是鱼龙灭绝幕后黑手
气候变化 鱼龙灭绝
2016/3/9
一种像海豚一样的标志性海洋爬行动物鱼龙大约在9000万年前的白垩纪晚期灭绝，比白垩纪末期让恐龙消失并让哺乳动物有机会主导食物链的大灭绝早了2800万年。近日发表于《自然—通讯》的一项研究显示，鱼龙的灭绝受到不稳定气候和演化速度减缓的驱使。
Indiana University and Virginia Tech geochemists show experimental verification of key principle
Indiana University Virginia Tech geochemists
2016/3/21
Geochemists at Indiana University and Virginia Tech have developed and demonstrated a technique for assessing the validity of a principle that has long been important in thermodynamics and chemical ki...
New research suggests that the feeding strategy of Kolponomos, a 'marine bear' that lived about 20 million years ago and ate a diet similar to that of modern otters, was strangely similar to a very di...
Losing the ability to fly gave ancient penguins their unique locomotion style. But leaving the sky behind didn’t cause major changes in their brain structure, researchers from The University of T...
Giant flightless bird wandered the Arctic 50 million years ago
Giant flightless bird Arctic 50 million years ago
2016/2/23
It’s official: There really was a giant, flightless bird with a head the size of a horse’s wandering about in the winter twilight of the high Arctic some 53 million years ago.The confirmation comes fr...
新研究印证人类与大猩猩1千万年前“分家”
人类 大猩猩
2016/2/22
多国科学家日前宣布，他们确认在埃塞俄比亚发现的类人猿化石已有800万年历史，这些化石很可能来自大猩猩的祖先。该发现印证了人类和大猩猩1000万年前在非洲大陆从共同祖先开始分化的假说。
Study challenges widely accepted theory of Yellowstone formation
challenges widely theory of Yellowstone formation
2016/2/23
Understanding the complex geological processes that form supervolcanoes could ultimately help geologists determine what triggers their eruptions. A new study using an advanced computer model casts dou...
Major Storm Events Play Key Role In Biogeochemistry of Watersheds
Major Storm Biogeochemistry Watersheds
2016/2/22
A new Yale-led study offers a new conceptual framework for understanding the biogeochemistry of watersheds. The framework combines hydrologic and biogeochemical theory to test well established concept...
Ancient extinction of giant Australian bird points to humans
Ancient extinction giant Australian bird
2016/2/22
The first direct evidence that humans played a substantial role in the extinction of the huge, wondrous beasts inhabiting Australia some 50,000 years ago -- in this case a 500-pound bird -- has been d...
UW Study:Ancient Rocks of Tetons Formed by Continental Collisions
UW Study Ancient Rocks Tetons Formed Continental Collisions
2016/2/22
University of Wyoming scientists have found evidence of continental collisions in Wyoming’s Teton Range, similar to those in the Himalayas, dating to as early as 2.68 billion years ago.
Earth has some special features that set it apart from its close cousins in the solar system, including large oceans of liquid water and a rich atmosphere with just the right ingredients to support li...
缅甸琥珀中发现拟寄生性虻类（图）
缅甸 琥珀 寄生性虻类
2016/1/5
昆虫的拟寄生行为是一种特殊的捕食行为，分为内拟寄生和外拟寄生。内拟寄生昆虫一般会将卵产入寄主体内，卵在寄主体内孵化并在一定阶段以寄主为食，并通常会导致寄主的死亡。拟寄生行为是昆虫演化史上一个重要的创新，代表了陆地生态系统中一种新的取食模式。拟寄生昆虫在生物链中扮演了重要角色，也被广泛应用到害虫防治工作。早侏罗世的蜂类是被广泛认可的最早的拟寄生性昆虫。此外，一些白垩纪捻翅目和鞘翅目幼虫也被认为是拟寄...
Newly discovered reptile fossils offer clues about elevation history of Andes Mountains and climate change
reptile fossils elevation history Andes Mountains climate change
2016/1/8
On an arid plateau in the Andes Mountains of southern Bolivia, a Case Western Reserve University researcher flagged what turned out to be the fossil remains of a tortoise nearly five feet long—a find ...
Dating historic activity at Oso site shows recurring major landslides
Alison Duvall College of the Environment David Montgomery Department of Earth and Space Sciences geology landslide
2016/1/4
The large, fast-moving mudslide that buried much of Oso, Washington in March 2014 was the deadliest landslide in U.S. history. Since then it’s been revealed that this area has experienced major slides...