Denver gets ribbed for its fixation on blue public art – the curious blue bear that welcome visitors at the convention center and the demonic rearing horse at the airport both evoke controversy, each ...

You pass them every day. But when was the last time you looked at a tree? Appreciated that oak, from fat roots to fine slender limb tips? You might notice them more if they were electric blue. That’s ...

Scientists have identified the origins of the blue colour in one of Jackson Pollock’s paintings with a little help from chemistry, confirming for the first time that the abstract expressionist used a ...