Some 80% of weather radiosondes—remote measurement instruments containing plastic, batteries and electronic parts—end up lost in nature after one flight. But a startup created by an EPFL master’s student is set to change that with a new, ultra-lightweight “glidersonde” that can automatically return to where it was launched. Some 80% of weather radiosondes—remote measurement instruments containing plastic, batteries and electronic parts—end up lost in nature after one flight. But a startup created by an EPFL master’s student is set to change that with a new, ultra-lightweight “glidersonde” that can automatically return to where it was launched. Environment Phys.org – latest science and technology news stories