5 Example Questions votes newest recent 10Climate Change: What is the sea level rise contribution from water vapor from combustion reactions? 5Climate Change: Are there viable geo-engineering methods to sequester seawater to combat sea level rise? 1Climate Change: What was the highest reliably recorded temperature on Earth? What statistical nature of future record temperatures can we expect? 1Space Exploration: How would we go about selecting a landing site for a manned mission to Mars? 1Space Exploration: Can new exploration probes make the work of old probes that visited the same place obsolete?