Know better. Do better.

Shifting the world's economies to run on clean, renewable energy, and doing it fast enough to prevent the worst impacts of climate change, presents plenty of unexpected challenges.

Nepal, for instance, aims to tap more of the huge hydropower potential in its mountain rivers. It wants to sell a big share of that electricity to its energy-hungry neighbour India, as the South Asian giant tries to ramp up its use of renewable power. That's a win for both countries.

But India's regulations prevent it from buying hydropower that China, its Asian rival and Nepal's other neighbour, has involvement in producing. That leaves Nepal in a tough spot because China is the other big investor in building its hydropower capacity.

So far India - which because of its geography is the natural buyer for Nepal's clean electricity - is winning the geopolitical tussle, correspondent Mukesh Pokhrel reports. But look for more strategic maneuvering over clean power globally in years to come.

India, meanwhile, is swiftly building its own renewable power supplies.

It expects to supply 31% of its electricity with solar power by 2030, up from 12% today, with coal's share falling from 73% to 55%, according to the Central Electricity Authority.

But that still leaves India getting most of its electricity from coal in 2030 - even as Intergovernmental Panel on Climate Change scientists say coal use globally has to drop 80% by then to limit warming to 1.5 degrees Celsius.

The country's climate-changing emissions - the fourth biggest in the world - continue to grow at their highest recorded rate, the Global Carbon Project said, as India's population and economic development ambitions grow.

Sunny Botswana, meanwhile, is also looking to jump-start solar energy and begin moving away from the coal that provides 99% of its electricity, writes correspondent Baboki Kayawe. By 2030, the southern African nation wants at least 30% renewable power.

But even recipients of a new green bonds drive - including Kalahari Energy Botswana, a firm that produces fossil fuel gas from coal beds - aren't sure renewables are the whole answer for coal-rich Botswana.

So what's the price of not adopting renewable power more swiftly?

Better early warning systems and adaptation measures mean death rates from increasingly extreme weather are being held in check - but economic losses are surging, our just transition editor Megan Rowling writes.

Climate and air pollution also are affecting India's monsoon - a risk to the country's 1.4 billion people who depend on it. But Indian scientists are studying the dynamics of rain, trying to better predict coming changes.

See you next week!

Laurie