Summary: This weekend on National Geographic Weekend radio, we conquer one of Brazil's roughest rapids in a kayak, then we use our arms to cycle the length of the Americas, and finally, we slide head first down an icy Olympic track at 90 mph.
Summary: This weekend on National Geographic Weekend radio, we conquer one of Brazil's roughest rapids in a kayak, then we use our arms to cycle the length of the Americas, and finally, we slide head first down an icy Olympic track at 90 mph.