THINGS YOU NEED TO KNOW

• British theoretical physicist Stephen Hawking died yesterday at the age of 76. Appropriately, on Pi Day. 
• Wal-Mart continues take on Amazon and will now start offering home delivery of groceries. 
• The World Happiness Report ranked 156 countries by happiness levels, based on factors such as life expectancy, social support and corruption. The number one happiest place in the world: Finland. Sorry, Disneyland. The United States fell from 14th to 18th place in this year's rankings. 
• A judge has ruled that Richard Simmons must pay a tabloid $128,000 because saying that he was transgender is not considered defamatory. 
• After two years of dating, Zayn Malik and Gigi Hadid have called it quits. 
• Tori Spelling and Jenny Garth will star in a new dramedy in which they will play exaggerated versions of themselves. 
• TV-viewing research finds that live TV viewing among all video consumption has continued to decline overall among U.S. broadband households -- nearly 60% of video viewed on the TV is now on-demand, 
• Dennis Rodman is on three years' probation for a DUI. 
• New Mexico has a new license plate that features two chili peppers and the slogan, "Chili capital of the World." 
• Joar Ulsom of Norway won this year's Iditarod Sled Dog Race. 
• The U.K. is expelling 23 Russian diplomats over poisoning of former spy, the single biggest expulsion for more than 30 years. They've been given one week to get out. 
• Marvel has announced that there will be a Black Panther sequel. Duh. 
• A nightclub in Miami has lost its business license after a woman brought a horse onto the dance floor. 
• The owner of a Greek soccer team last weekend stormed onto the field during a match waving a handgun.