Arctic algae crusts preserve climate data
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2013/11/algaePNAS_free.jpg?fit=860%2C460&ssl=1)
Arctic algae (shown) can live for hundreds of years growing thick crusts that preserve records of sea-ice cover, seawater temperature and climate variability.
Courtesy of Nick Caloyianus
Arctic algae (shown) can live for hundreds of years growing thick crusts that preserve records of sea-ice cover, seawater temperature and climate variability.
Courtesy of Nick Caloyianus