A meandering river birthed an oxbow lake that happens to be shaped like the first letter of the English alphabet.

Torrential rain from a stalled storm system caused flooding in countries such as Poland and Slovakia.

Water inundates the marshes along Delaware Bay, which provide protection against flooding and erosion, as well as habitat for migrating birds.

Lights in Chile's central city display an array of colors and densities, reflecting various land uses and differences between the region's communes.

The precise geometry of the protected area encompassing an iconic New Zealand volcano is unmistakable from space.

Large numbers of rectangular holding ponds lie amid mangrove forests in southern Ecuador.

Scientists use satellites in orbit and boots on the ice to monitor glacial changes on the flanks of Mount Baker and elsewhere in Washington state.