Kara

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Dinosaur Physiology Debate Continues to Simmer

Were dinosaurs warm-blooded, cold-blooded, or what? This is one of the most persistent questions in paleontology, and one that we don’t yet have a good answer to. Aside from the flaws in the question itself – life isn’t neatly divided between the warm and the cool – reconstructing a dinosaur’s …

Dinosaurs

视界24小时

iWeekly意大利维尔纳扎,时区[GMT +1小时]仙境般的海边小村庄。摄影师:Francesco Gola美国洛杉矶,时区 [GMT -8小时]蓝天下的一抹美丽红色。摄影师:Ravi Vora阿尔及利亚,时区 [GMT +1小时]猜猜我是汪星人还是喵星人?沙漠狐是生活在北非的一种特色动物,幼年时 …

帅呆:GPS定位可达厘米级精度

帅呆:GPS定位可达厘米级精度<p>来源 : 科学之家 发布时间 : 2015-05-26 17:36<p><i><br>图片来源:mil.news.sina.com.cn</i><p>德克萨斯大学奥斯汀科克雷尔工程学院( University of Texas)的研究人员开发出一种精度可达厘米级的全球定位系统(Global Positi …

水知道答案,美轮美奂的微距雪花

分钟学堂(44)有吃了能减肥的食物吗?