LiveScience: A nimble underwater robot has traveled below Arctic sea ice and collected the most extensive real-time video footage yet from this largely unexplored environment, revealing an unexpectedly rich ecosystem, scientists report.
Researchers have long known that algae and other small organisms thrive on the undersurface of Arctic sea ice -- particularly in regions thin enough for sunlight to shine through and support photosynthesis. But, scientists have not been able to closely examine this environment...