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Our experts mull what it will take to keep people healthy, whether there should be optimism for a vaccine and how to fight lockdown fatigue.

In Australia, space defence gets billions of dollars in funding, and commercial projects get hundreds of millions. Space science gets only $2 million a year.

We’re already building satellites that can sit in the palm of your hand. But getting them into orbit can be a challneg, and not only for technical reasons.

There are three ways heat can be shared:  conduction, convection and radiation. Find out which one lets heat travel through space.

Rising seas and groundwater depletion, both driven by climate change, are making soils saltier in many parts of the world. Farmers will need help adapting, especially in developing countries.

Modern rodenticides can kill rats with a single dose and readily pass up the food chain to larger carnivores. They are widely used and largely unregulated.

Satellites can already spot a new fire within minutes, but the information they beam back to Earth isn’t getting to everyone who needs it or used as well as it could be.

Cities seeking to create greener, more liveable neighbourhoods can revitalise disused spaces in various ways. Encouraging and supporting communities is key.

Millions of miles of fences crisscross the Earth’s surface. They divide ecosystems and affect wild species in ways that often are harmful, but are virtually unstudied.

Nineteen research universities join nine foundations in supporting the work of The Conversation US.