Compared to most natural disasters, a lava invasion does not move all that fast. Nowhere is that more evident than the small Hawaiian community of Pahoa, where a lava flow has been approaching the town since June 27. Now, the lava has finally arrived on the outskirts of town, overrunning private property. In the picture above, the lava behind the fence is chest-high. Geologists are keeping a close eye on the progress of the flow, which currently seems to be headed straight for Pahoa Village Road, one of the village's main streets, and beyond that, for Highway 130, a traffic artery travelled by 10,000 cars a day. It's already crossed over one road, Cemetery Road, and a cemetery (presumably the road's namesake).
The Commonwealth has been working on a plan for taking care of the Great Barrier Reef over the next four decades—but scientists say it's inadequate. The Australian Academy of Science released today an 11-page critique of the government's latest draft of its Reef 2050 Long-Term Sustainability Plan.
In the 90s kids show The Magic School Bus, eccentric teacher Ms. Frizzle took her class for a wild ride in a sick student’s immune system -- only to be attacked by white blood cells. White blood cells tracked the bus using the same chemical traces they follow to find infected sites or navigate their way to viruses. If microscopic robots could replicate this complex navigation system, which is shared by many different cells and bacteria, doctors could use them to provide real-time updates on internal structures or distribute drugs to specific targets within a body.