Cardano is a decentralized public blockchain project that started in 2015. IOHK company developing this project and it’s managed by Charles Hoskinson (co-founder of BitShares and Ethereum).
Cardano's concept is to create a blockchain that can work much better than older ones like Ethereum. This means the possibility to process more transactions cheaper and faster. Hoskinson believes that Cardano is the third generation blockchain, while Bitcoin and Ethereum are the first and second ones. So instead of copying the code of other blockchains, IOHK created its own blockchain.
Cardano crypto’s all-time high price was in January, 2018 when it costed $1.33 USD. ADA coin is in the TOP 20 cryptocurrencies by market capitalization. You can store ADA coins on official Cardano’s wallet - Daedalus. Today Cardano price is 1.2534 USD. You can buy Cardano at Stealthex exchange.