A mother of six becomes deathly ill with unusual symptoms. Investigators suspect she was murdered with a poison protein shake."48 Hours" contributor Natalie Morales reports.
The Department of Homeland Security is escalating its clash with so-called sanctuary states, warning multiple states they could face legal action, CBS News has learned.
The annual migration of monarch butterflies is one of science's great mysteries: millions of monarchs know the correct path even though they have never made the long journey themselves. As 60 Minutes found, the expedition to watch the migration can be its own challenge.
