A Google-a-Day Puzzle for Apr. 22

Reading Time: 2 minutes

Our good friends at Google run a daily puzzle challenge and asked us to help get them out to the geeky masses. Each day’s puzzle will task your googling skills a little more, leading you to Google mastery. Each morning at 12:01 a.m. Eastern time you’ll see a new puzzle, and the previous day’s answer (in invisitext) posted here.

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SPOILER WARNING:
We leave the comments on so people can work together to find the answer. As such, if you want to figure it out all by yourself, DON’T READ THE COMMENTS!

Also, with the knowledge that because others may publish their answers before you do, if you want to be able to search for information without accidentally seeing the answer somewhere, you can use the Google-a-Day site’s search tool, which will automatically filter out published answers, to give you a spoiler-free experience.

And now, without further ado, we give you…

TODAY’S PUZZLE:

“Black gold” often has annelids in it, but it can help your garden grow. The annelids you’ll find in this substance are most likely to be what color?

YESTERDAY’S ANSWER (mouseover to see):

Search [turn manure into electricity] to learn that it’s possible to trap methane gas from livestock manure and turn it into usable energy. Search [global warming potential methane 20-year] to find that methane’s 20-year GWP number is 72, meaning it’s 72 times more potent than CO2 at trapping heat.

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