Susan Matthews Stellar 'Circle of Life' Captured in New NASA Photo 'Martian Gardens' Help Scientists Find the Best Veggies to Grow on Mars Simulated "Martian gardens" are helping NASA scientists learn which plants astronauts will be able to grow in future missions to the Red Planet. By Susan Matthews Published 6 October 16 9 Snack Foods: Healthy or Not? Are these 9 snack foods healthy, or not? By Susan Matthews Published 30 May 13
