Southern and eastern Australia need to prepare for heatwaves and increased fire risk this summer, as forecasts predict hot, dry weather.
Bureau of Meteorology researchers painstakingly analysed more than 40 years of data to work out exactly what is causing Australia's spring bushfire phenomenon.
El Niño events can affect millions of people around the world, causing drought in Australia and floods in the Americas.
Is our changing climate making regions of the US more suitable for ticks and mosquitoes that spread diseases? Or is the climate changing human physiology making us more vulnerable?