Lena Siegenthaler

#101 most read in

Lena Siegenthaler is a Media Operations Analyst at illuminem. She combines ESG data analysis, environmental research, and strategic communication, with experience in circular fashion, life cycle assessments, and environmental policy. She previously worked as a media analyst at NIL Textile and contributed to The Nature Conservancy in Colombia. She studied Public Affairs major at UCLA with a minor in Environmental Systems and Societies.

Kevin Trenberth

Oct 09 2025

When the ocean stops breathing

Illuminem Voices

Effects · Water

The ocean is highly stratified. Warm, fresh water sits on top of cold, salty water, influencing vertical oceanic exchanges. As the ocean becomes increasingly layered, its role as the planet’s climate buffer is faltering