Graham Smith

When a man drives by the strip at Lumley Beach in downtown Freetown at night, he'll probably hear a sharp hiss. That's not an unusual sound in Sierra Leone. People hiss instead of whistling — to get your attention, to call for the bill at a restaurant, to buy a bottle of water on the street.

But the hissing along a stretch of beachfront road at Lumley Beach has a different purpose. It's the sound prostitutes make, and they've perfected the hiss. That's why they're called serpents.

When you listen to All Things Considered host Melissa Block's story about Thomas Jefferson's garden, you'll hear how he cared about putting peas on the table and sharing seeds with his friends. He also set loftier goals for his vegetable garden: Monticello's south-facing expanse was a living laboratory for a lifelong tinkerer and almost obsessive record keeper. Jefferson was, in many ways, a crop scientist.