The feet,for example. Heavy socks can warm your feet, if your feet are really cold.

VOA: special.2009.12.13

Heavy ice can form and break them.

VOA: special.2010.01.12

And with higher sea levels, heavy rains and massive tides known as storm surges, which often accompany tropical storms, can do unexpected damage.

VOA: standard.2009.11.09

But Paul Woods says that idea is limited by the batteries used to store energy and that there is no battery currently available that can power long-haul trucks or heavy machinery.

VOA: standard.2009.09.02