@MattJammer
"It was fun at first, and then it was not!" -Hank Green
@jordoex
Since it seems like John always covers things that humans do, and Hank always covers what nature does, it's so nice for Hank to cover humanity's achievements for once.
@ShouldersofGiants100
I don't know what university you are going to, but mine is like being able to watch 2 full hours of Crash Course a week for 5 different subjects.The profs are interesting and engaged, the topics are interesting... any school that fails at that is robbing you
@saracowgill2144
that process of the oxygen being depleted after a rush of nutrients and algae bloom is called eutrophication, and I was slightly disappointed that you didn't include this marvelous word. But kudos for all the education you are doing and I hope you will continue and create graduate studies after this!!
@carynebio
Writing to thank you very much for your videos. I use them a lot in my classes here in Brasil, even with the language barrier, they help a lot. I have use them as a review before my classes in the post-graduation course where I teach ecology.
@mahivyas4034
do more "our effect on the planet" type of videos
@ninjanerdstudent6937
My lazy professor linked our class to this video as well as other videos.
@TheAurgelmir
WE ARE DOOMED! DOOMED I TELL YOU! *Rocks back and forth*
@surabhigupta5407
You would be the best Science teacher
@Hitori101
I would have liked to see a vid on pros and cons of the variety of energy production we have. Geothermal, Solar, Hydro, Nuclear, Treadmills... Each one has pros and cons and people don't really know what methods can and can't be used where in relation to needs and resources. I wish more gyms used there treadmills and bikes to power the place though, as just a side thought.
@stonedogre
I can't thumbs up enough for this one.
@nutsrice
Hey there. Just wanted to say that as a Freshman undergrad aspiring to be a Chem/life science student, Hank's one of my geeky role models. I love his videos and think he kicks major butt
@suup101
I love the new background! Please keep it as it helps me from not going blind. Great show, please keep them coming :)
@wernerempleo2224
How I wish Crashcourse will make videos about Agriculture
@sachinshah8099
Best science channel ever
@sachinshah8099
could you make a vid on DDT's?
@KingAbiTheAwesome
Your timing with this video was impeccable
@Talshere88
Impractical. We require fossil fuels to power our transport and that accounts for the majority of our sulphur and nitrogen dioxide.
@elyseyost1980
It's really lucky when there's a crash course video on what you're learning in school. I
@ariannapaul2821