Climate change is no longer a warning for future generations, it is shaping the way we live today. From soaring energy bills and extreme weather to concerns about health and food security, its effects are increasingly impossible to ignore. But alongside the challenges, scientists like Dr Reshma Rao see unprecedented opportunities to reshape the future.
An Assistant Professor and Royal Academy of Engineering Research Fellow at Imperial College London, Dr Rao leads pioneering work in sustainable electrochemical technologies that could transform how the world produces fuels, chemicals and clean energy.
"The conversation has shifted," she says. "It's no longer about whether climate change will affect us, but how it is affecting us now, and what kind of future we want to build."
For Dr Rao, one of the strongest reasons for optimism is the rapid progress in clean technology. Renewable electricity from solar and wind has become dramatically cheaper over the past decade, while electric vehicles, heat pumps and battery storage are becoming increasingly practical for households and businesses alike.
Yet the biggest challenge still lies in industries that cannot simply switch to electricity.
"Heavy industry, shipping, aviation and chemical manufacturing require entirely new solutions," she explains. Her own research focuses on electrochemistry—using renewable electricity to drive chemical reactions that produce green hydrogen from water or convert carbon dioxide and biomass into useful fuels and chemicals.
"In the future, renewable energy won't just power our homes—it can also manufacture the products that currently depend on fossil fuels."
What excites her most is that these technologies are no longer confined to academic laboratories. Stronger partnerships between universities and industry mean many innovations are now moving towards large-scale deployment.
Looking ahead over the next two decades, Dr Rao believes the greatest impact will come from combining scientific breakthroughs with industrial transformation. That includes smarter energy storage, cleaner manufacturing, better materials and a stronger commitment to a circular economy, where products are designed to be reused, repaired and recycled rather than discarded.
She argues that industries such as steel, cement and chemicals need more than incremental improvements—they require complete redesigns backed by collaboration between researchers, businesses and governments.
Individuals also have a role to play, she says, but lasting change depends on making sustainable choices accessible.
"When clean electricity, electric transport and efficient heating are affordable and widely available, people will naturally adopt them. Individual change and system change reinforce each other."
Above all, Dr Rao believes climate action should be viewed not simply as an environmental issue but as a race to innovate.
Urgency, she argues, demands faster movement from laboratory discoveries to real-world solutions, greater confidence from businesses to invest in emerging technologies, and long-term government policies that encourage innovation.
"The pace at which we develop, scale and implement solutions is just as important as the discoveries themselves."
