My dad used to sing to me an old folk song before I went to sleep. One of my favorite verses went:

Peaches in the summertime, apples in the fall.

If I can't have the one I love, I won't have none at all.

I still like that lyric for its simplicity and its assertion of seasonal eating at a time when that was unquestioned. You ate fresh apples in the fall (and probably storage apples through the winter) and peaches all summer. Love could be fleeting and unreliable, but autumn apples and summer peaches would always be there.

On a muggy summer afternoon in Greenpoint, Brooklyn, a dozen people are hard at work on the patio behind a local church. They're stripping old bicycles of their brakes, cables and chains, and sanding and spray-painting them white.

But behind the lighthearted chatter, there's a more somber purpose to this gathering: They're building "ghost bikes."

Painted all white and adorned with colorful notes and flowers, ghost bikes are the cycling community's equivalent of roadside shrines dotting the highway; they mark the spot where a rider was killed in traffic.

While many cities around the country grapple with drought and excessive heat this year, city planners in Boston have something else on their minds: the prospect of rising water.

In this coastal metropolis, scientists and computer models predict that climate change could eventually lead to dramatic increases in sea level around the city. Coupled with a storm surge at high tide, parts of the city could easily end up under water.