The month of May is a traveler’s month. A month where school comes to an end for many and the nine-to-fivers seek a break from the daily grind as the Southern Hemisphere starts to roar.

The top chart shows the steady rise in Northern and Southern Hemisphere temperature since the beginning of the 20th century. The second chart shows little change in the interhemispheric ...

CO₂ concentrations over the southern hemisphere are trailing those in the planet’s northern half, where 400 ppm level was breached in 2014-15. ... as can be seen in the chart below.