Is Sending Humans to Mars Possible? Reading vs. Listening

The passage discusses the possibility of sending humans to Mars, with the reading highlighting three challenges and the listening providing solutions to each. One problem raised by the reading is the difficulty in sustaining astronauts for the two-year journey, as spacecraft cannot carry enough food, water, and other essentials. However, the listening argues that this is not a significant issue, as hydroponics can be used to grow crops and recycle waste water for drinking, while plants also release fresh air through photosynthesis. The reading also notes the negative impact of zero-gravity on health, but the listening explains that astronauts can mitigate this through exercise and vitamin supplements. Finally, the reading highlights the danger of radiation from the sun, but the listening suggests that the spaceship could be equipped with a monitoring device and shielded areas for protection.