The harpswood newsletter for folk who care about comms and climate in 2026.

As the global space economy gathers pace, a new generation of companies is pushing ahead with advances in satellites, spacecraft and launch technology, opening up new possibilities in unexplored orbits and here on Earth. 

Here are five outrageously exciting space tech startups.

The harpswood newsletter for folk who care about comms and climate in 2026.

This month Sarah Humphrys, CEO & co-founder at AimHi Earth is our Founder Unfiltered. AimHi Earth delivers live, online sustainability training. Every programme is built for the organisation it is delivered to, blending the latest climate science, behavioural psychology and storytelling.

The harpswood newsletter for folk who care about comms and climate in 2026.

This month Jim Mann, CEO & Founder at UNDO is in the hot seat. UNDO uses enhanced rock weathering technology to kick-start nature’s own carbon capture process, locking away CO2 permanently.

The harpswood newsletter for folk who care about comms and climate in 2026.

Sarah Atkinson, CEO of the Social Mobility Foundation, answers the questions this month.

The foundation unlocks potential for ambitious young people who face structural barriers in education and work because of their socio-economic background.

The harpswood newsletter for folk who care about comms and climate in 2026.

This month James Hygate, CEO & Founder of Firefly, is in the hot seat. Firefly is developing a solution turning treated sewage waste, known as biosolids, into sustainable aviation fuel that can reduce jet emissions.

The harpswood newsletter for folk who care about comms and climate in 2026.

Engineering a successful Series A: how Isembard used PR to raise its profile, attract investors and scale faster.

The harpswood newsletter for folk who care about comms and climate in 2026.

The harpswood newsletter for folk who care about comms and climate in 2026.