Soon enough Ethereum will change to proof of stake, instead of proof of work.
Nowadays you still can mine ethereum coins through your mining rigs / computers, but after ethereum changes its way of work you cant!
This isnt new news, but allot of people are not aware of this and buying mining rigs just to mine ethereum. Please be aware of the upcomming changes and read before starting to invest!
Difference between proof of work vs proof of stake:
Source:
http://www.investopedia.com/news/ethereum-adopt-proofofstake/
Greetz