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Small farmers and indigenous communities have practised sustainable agriculture for centuries. Chidi Oguamanam is working to ensure that traditional knowledge is recognized and shared equitably.

The kind of clean technology Chidi Oguamanam advocates looks a lot different from what many of us might imagine. No high-tech solar panels. No futuristic gizmos. No scientists in a lab.

In recent years, the best-performing artificial-intelligence systems — in areas such as autonomous driving, speech recognition, computer vision, and automatic translation — have come courtesy of software systems known as neural networks.

But neural networks take up a lot of memory and consume a lot of power, so they usually run on servers in the cloud, which receive data from desktop or mobile devices and then send back their analyses.

Seeking to mitigate the greenhouse gas contributions of the region’s agricultural sector, a University of Lethbridge-led study has been granted $1.1 million by the federal government’s Agricultural Greenhouse Gases Program.

“Canadian farmers are great stewards of the land and the environment. These new investments are part of the government’s commitment to addressing climate change and ensuring our farmers are world leaders in the use and development of clean and sustainable technology and processes,” says Lawrence MacAulay, Minister of Agriculture and Agri-Food.

Nitrogen is abundantly available in nature and forms the basis for many valuable products, both natural and artificial. This requires a reaction known as “nitrogen fixation”, whereby molecular nitrogen is split into two atoms of nitrogen that can then be connected to other elements like carbon or hydrogen. But performing nitrogen fixation to make ammonia on an industrial scale requires harsh conditions with very high temperature and pressure. EPFL scientists have now developed a uranium-based compound that allows nitrogen fixation to take place in ambient conditions. The work, published in Nature, forms a basis for the development of more efficient catalysts, while it highlights new concepts that can be expanded to metals beyond uranium.

We've all heard of ways to reduce our carbon footprint: biking to work, eating less meat, recycling.

But there's another way to help the climate. A recent study from Lund University in Sweden shows that the biggest way to reduce climate change is to have fewer children.

"I knew this was a sensitive topic to bring up," says study co-author Kimberly Nicholas on NPR's Morning Edition. "Certainly it's not my place as a scientist to dictate choices for other people. But I do think it is my place to do the analysis and report it fairly."

The study concludes that four high-impact ways to reduce CO2 gas emissions include having fewer children, living without a car, avoiding airplane travel and eating a vegetarian diet.