Bill Ackman of Pershing Square Capital Management and Andreas Halvorsen of Viking Global Investors are two billionaires worth following for investment ideas. They are entrusted with billions in assets to manage for clients, and that reflects a career of making smart investment choices.

D id you know that the expansion of AI will require as much new energy as some countries? TIME Chief Climate Officer Shyla Raghav explores artificial intelligence and how it impacts energy use.

During that time, Appian has evolved into an artificial intelligence (AI)-based process automation company, which is sometimes called low-code or process mining. It's streamlined its business through layoffs and cost cuts,