Talking about the Edinburgh festivals on BBC Scotland

Back on the Whale, talking transport

Another update on the airships article: We made the Independent!

Updated: Airships taking off on Channel News Asia, CJAD 800 in Montreal and BBC Radio Sheffield

Greta Thunberg, mental health and flying - Round 2!

Greta Thunberg, mental health, and population: A response to Julia Hartley-Brewer

New article: How will we travel the world in 2050?

EPRi's 2nd Birthday

Open letter: Incorporating whole lifecycle greenhouse gas emissions into the Scottish Building Standards