Cryptocurrencies use a ton of electricity because of mining. In recent years people started working on a different technique called Proof-of-Stake. Not only does it use less energy, it can also be more secure. (This video is a re-upload to fix a mistake I made in the previous one. Sorry about that!) 💌 Sign up for Simply Explained Newsletter: Monthly newsletter with cool stuff I found on the internet (related to science, technology, biology, and other nerdy things)! No spam. Ever. Promise! 💰 Get $10 of free Bitcoin: Use my Coinbase affiliate link, and we'll both get $10 of free Bitcoin when you deposit $100: 📚 Sources for this video: 🌍 Social Twitter: Facebook: Blog: ❤️ Become a Simply Explained member: #proofofstake #blockchain #mining #simplyexplained #crypto