As global warming accelerates, the increasing number of supraglacial lakes and the need to accurately measure their depths ...

Current sea-level projections rely on a range of methods to model climate processes. Some include well-understood phenomena like glacier melting, while others incorporate more uncertain events ...

Is that the sea level rising, or is the sand just being swept away? Speaking of sea levels, you keep hearing that they rise higher every year — but how exactly is that measured? After all ...