2023 could be the year we finally reach a tipping point in the fight against climate change. The energy think-tank Ember predicts global greenhouse gas emissions in the energy sector (which accounts for 30% of global emissions) are finally on the way down. Also, a tipping point of a very different kind – experimentation in neuro-technology is now so advanced that ethicist Nita Farahany believes companies and governments will soon be trawling our thoughts the way they currently trawl our digital communications. She's talking of a new human right – a right to cognitive liberty.