The velvety strokes of pastel have enchanted fine artists for more than a century. From airy strokes to bold marks and soft hues to vibrant shades, the versatility of pastel makes it suitable for a wide range of subjects and moods. Now anyone can experience this multi-dimensional medium with "The Ar[...]

A key technology in the chemical and energy industries, heterogeneous catalysis is growing in importance owing to its potential for solving global energy problems.[...]