二氧化硅气凝胶改造火星，使火星表面适合光合作用生物生存。
We show that widespread regions of the surface of Mars could be made habitable to photosynthetic life in the future via a solid-state analogue to Earth’s atmospheric greenhouse effect. Specifically, we demonstrate via experiments and modelling that under Martian environmental conditions, a 2–3 cm-thick layer of silica aerogel will simultaneously transmit sufficient visible light for photosynthesis, block hazardous ultraviolet radiation and raise temperatures underneath it permanently to above the melting point of water, without the need for any internal heat source.
真是牛逼坏了。[吃惊][并不简单][晕]

#eye-water[音乐]#

在以后的某个时刻。

你会感谢，

在分开的时刻，

多回头看一眼的自己。

周日Delaware water gap一日游，去打了buttermilk falls和dingmans falls，早上10点出发，直奔buttermilk，将近中午到达，下车便是瀑布，然后爬一小段有点陡的楼梯（图7）就到了瀑布的上面，在小溪旁吃了午餐再开车转战dingmans falls。dingmans很好走，基本都是图8那样的木栈道，且一直有树木遮阴，即使32度的天气仍觉得很凉爽，天然空调房。步道全长1mile多，所以很适合老人小孩全家游。