Earth's oceans, known for their deep blue hue, could one day undergo color shifts, say scientists. A report based on a study ...

Without sufficient nitrogen, the plants suffer from a lack of chlorophyll, which causes the leaves to lose their ...

The legendary diamond mines of Golconda are all gone now. Blame it on the demand for their extraordinary stones—devoid of nitrogen, their color has been described as “whiter than white” and “as clear ...