Been using this ‘pencil project’ software for flowcharting. Works really well for quickly sketching systems diagrams and workflows that you can export to various formats. It is available on Windows (also as a stand-alone App on PortableApps.com, Linux, and Mac) The ‘sketchy’ style wireframing...
Everything You Wanted to Know About Lava Flows - The Scholarly Kitchen: Geologist Jerry Magloughlin looks at the different ways that lava flows.
Source: sspnet.org
NASA Confirms Evidence That Liquid Water Flows on Today's Mars: New findings from NASA's Mars Reconnaissance Orbiter (MRO) provide the strongest evidence yet that liquid water flows intermittently on present-day Mars.
Source: nasa.gov