while commercial fishermen argue that their quotas should be expanded to reflect the abundance seen on the water. This frustration is especially high in areas where red snapper are so thick that they ...

Large concentrations can discolor water from red to brown, causing blooms to be called "red tides." K. brevis is found almost exclusively in the Gulf of America (formerly Gulf of Mexico ...

Now, a new analysis of NASA and ESA data using novel laboratory techniques suggests that the red dust on Mars more closely resembles ferrihydrite, a water-containing iron oxide, rather than hematite.

Thanks to the fleet of spacecraft that have studied the planet over the last decades, we know that this red color is due to rusted iron minerals in the dust. That is, iron bound up in Martian rocks ...