This week's circulars

Videos

Snowflake melts under PNNL's mini microscope

A smartphone microscope created using Pacific Northwest National Laboratory plans captures the structure of a snowflake and then watches it melt.
Rebecca Erikson/PNNL
Snowflake melts under PNNL's mini microscope 0:07

Snowflake melts under PNNL's mini microscope

Pro cliff jumpers take the plunge at McCloud Falls in California 0:50

Pro cliff jumpers take the plunge at McCloud Falls in California

Scientists at PNNL design 3D-printable microscope for phones 2:33

Scientists at PNNL design 3D-printable microscope for phones

'Dream Big' sneak peek movie trailer 2:01

'Dream Big' sneak peek movie trailer