Digital
![](https://www.newscientist.com/wp-content/themes/new-scientist/assets/img/barrier/barrier-digital-space-may-2019.jpg)
- Unlimited web access
- New Scientist app
- Videos of over 100 science talks available exclusively to subscribers
Global S&T Development Trend Analysis Platform of Resources and Environment
The epic hunt for the place on Earth where life started | |
admin | |
2018-06-13 | |
发布年 | 2018 |
语种 | 英语 |
国家 | 国际 |
领域 | 地球科学 |
正文(英文) | ![]() Tim McDonagh NEARLY 4 billion years ago, the first life appeared on our planet. It would have looked unlike any life as we know it today, more basic even than bacterial cells – barely more than a few genetic molecules packaged up in some kind of a sac. Working out how this popped into existence is one of our greatest intellectual endeavours. And at the root of the problem is an epic hunt for the perfect location. Researchers studying the origins of life each have their favourite spot. Some sites offer the right molecular ingredients, others provide ready-made little containers to hold these early reactions. But is it possible that one special place had the perfect combination of all the conditions essential for the chemistry of life? And does a similar place still exist today, on Earth or elsewhere in the universe? Charles Darwin kicked off the quest. In a letter he wrote to the botanist Joseph Dalton Hooker in 1871, he described a hypothetical warm little pond, rich in chemicals and salts, with sources of light, heat and electricity. He imagined that in such an environment, proteins might spontaneously form, ready to turn into something more complex. In the 1950s, chemists Stanley Miller and Harold Urey managed to create Darwin’s pond in the lab. They mixed water with gases they thought would have been present on early Earth, and zapped them with simulated lightning. This produced amino acids, the building blocks of all proteins. Basic suppliesTheir experiment is one of the most famous of the last century, but we now know that what they created, … |
URL | 查看原文 |
来源平台 | NewScientist |
文献类型 | 新闻 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/129889 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | admin. The epic hunt for the place on Earth where life started. 2018. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[admin]的文章 |
百度学术 |
百度学术中相似的文章 |
[admin]的文章 |
必应学术 |
必应学术中相似的文章 |
[admin]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论