Tab Sidebar 2.0.1 for Firefox is an add-on that's been around for a while (and, despite other sites claiming that someone would develop a similar feature for Firefox, this was last updated in Summer 2008!) and enables you to add a visual preview of each tab, rather than use the traditional tabbed system. It takes some getting used to. Switching between open tabs, using the visual system, is perhaps more ingenious, but maybe less productive.
Tab Sidebar link.
Scientists create a virtual reality simulation of a black hole sitting at the centre of the Milky Way
Simulations like this can help people understand complicated systems in the universe in a better way
The most luminous galaxy ever discovered is cannibalising at least three of its smaller neighbours, study finds
The galaxy radiates at 350 trillion times the luminosity of the Sun
Researchers modify genetic code of cancer-killing virus so it can target cells that protect cancer from immune system
Changing the genetic coding causes the infected cancer cells to produce a protein that kills the fibroblast cells that protect cancer
The findings can help improve the current understanding of brain development disorders, such as epilepsy or autism