There is debate over how far blended hydrogen can cut CO2 emissions, and many obstacles need addressing to make long-distance transport commercially viable.
Nearly 3,000 trees are to be felled during the construction of oil and gas pipelines in northeast India, in protected areas that are home to endangered species such as the western hoolock gibbon and white-winged duck.
Artificial groundwater recharge wells have shown early promise in Pakistan’s capital. Experts think they could help to replenish the city’s overstretched groundwater while managing urban flooding.
The Ugandan climate justice campaigner says more oil and gas will not solve energy poverty for Africans, calling for renewables as the 'cheapest, fastest' solution.