A Harvard researcher has created a microscopic "garden" by shaping microscopic crystals into structures that resemble flowers. By mixing barium chloride and sodium silicate in beakers of water, postdoctoral fellow Wim Noorduin was able to shape petals and broad leaves that can only be seen through an electron microscope. "[I]t really feels a bit like you're diving in the ocean, seeing huge fields of coral and sponges. ... Sometimes I forget to take images because it's so nice to explore," Noorduin said.