use the following search parameters to narrow your results:
- subreddit:sub
- find submissions in "sub"
- author:username
- find submissions by "username"
- site:example.com
- find submissions from "example.com"
- url:text
- search for "text" in url
- selftext:text
- search for "text" in self post contents
- self:yes (or self:no)
- include (or exclude) self posts
e.g. subreddit:pics site:imgur.com dog
Belgian scientists develop solar hydrogen panel. The innovation is said to be able to produce 250 liters of hydrogen per day and can convert sunlight and water vapor from the air directly into hydrogen gas with an efficiency of 15%.
by Chop_Chop to /s/Hydrogen from pv-magazine.com