A well-traveled root: A vendor sells sweet potatoes at a market near Manila in 2011. The Portuguese brought the root to the Philippines all the way from the Caribbean.
Credit Courtesy of Caroline Roullier/PNAS
The sweet potato made three independent trips to Southeast Asia. The Polynesians probably introduced it in 1100 A.D. (red). While the Spanish (blue) and Portuguese (yellow) brought other varieties from the Americas around 1500.
The Polynesians had sophisticated, double-hulled canoes that were built for deep sea voyages. An artist aboard Capt. Cook's ship drew a picture when they arrived in Hawaii.
Originally published on Mon January 28, 2013 10:15 am
When it comes to spreading food around the world, Christopher Columbus and his European compatriots get most of the credit.
Yes, they introduced some quintessential ingredients into European and Asian cuisine. Who could imagine Italian food without the tomato? Or Indian and Chinese dishes without the spicy kick of chili peppers?
Originally published on Wed January 23, 2013 2:55 pm
A large study is providing a rare glimmer of hope for patients with pancreatic cancer, perhaps the deadliest of all malignancies.
By the time they're diagnosed, most patients with pancreatic cancer have advanced disease that's spread to the liver and lung. And the primary tumor may be inoperable because it's wrapped around vital blood vessels and nerves.