It was the first day of spring break in 1992 in Phoenix, and 12-year-old Heather Smith was excited for her family's upcoming ski trip. But before Smith and her family had even packed their snow pants, ...

The mouth starts the digestion process by breaking food down into a more easily digestible form. It does this through a combination of mechanical and chemical digestion. After people take food in ...

With our free press under threat and federal funding for public media gone, your support matters more than ever. Help keep the LAist newsroom strong, become a monthly member or increase your support ...