August 26th, 2004

For Mars journey, scientists seek waste-eating plants Science Blog

In possibly the ultimate in recycling, people who voyage to Mars may be able to quench their thirst with water recovered from waste. Engineers and agronomists are testing plants to identify ones that can grow normally when fed sewage. The circle of life would be complete when drinkable water is reclaimed from the plants.

January 6th, 2003

Hunt for life on Mars dealt another blow Science Blog

An Australian geologist has identified what could be the first ever active flow of fluids through gullies on Mars. University of Melbourne geologist Dr. Nick Hoffman identified recent gully and channel development near the polar regions of Mars from images taken by the Mars Global Surveyor spacecraft. But contrary to the majority of scientific opinion which suggests that such features were carved by liquid water, Hoffman says the flow is most likely frozen carbon dioxide. NASA is hoping to find signs of liquid water on Mars so it can have a target for the next generation of Mars landers and rovers to go and search for life, but their search could prove fruitless if Hoffman’s analysis of the images is correct.

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