Rahul Dey describes how high-resolution digital imaging of ice core layers can be used to infer paleoclimatic changes.

Using carbon dioxide capture and storage (CCS) for carbon removal is crucial to climate policy, but implementation at scale is at risk owing to political obstacles. Climate policies must avoid relying on empty promises of CCS for carbon removal without necessary financial resourcing and support emissions reductions separately from carbon removal.

Underground hydrogen storage (UHS) will be an essential part of the energy transition. Over 45 pilot projects are underway to reduce the technical and regulatory risks of UHS, but negative perceptions must be addressed to ensure that hydrogen’s role in achieving net zero targets can be realized.

Laura Wainman explains how drones can be used to sample the composition and dynamics of volcanic plumes.

Falk Oraschewski describes how phase-sensitive radio echo sounding can be used to measure melting at the base of ice shelves and englacial ice crystal orientations.

To explore career opportunities outside of academia, Nature Reviews Earth & Environment interviewed Allen Pope about their career path from research scientist to programme director at the U.S. National Science Foundation.