A group of researchers from China and Italy has tested the influence of different tilt angles on the thermal failure of PV modules. They found that when using a tilt angle above 30 degrees, the ...

Flowers will stay fresh for longer with '45-degree angle' hack Martha Stewart has a top tip on how to make sure to preserve your bouquet - and you may need a protractor.

One carriage is reported to be teetering at a 45 degree angle, with large crowds seen gathering on nearby streets in the aftermath of the incident.