NASA Testing Method to Grow Bigger Plants in Space

By Danielle Sempsrott of NASA – Re-Blogged From WUWT

In an effort to increase the ability to provide astronauts nutrients on long-duration missions as the agency plans to sustainably return to the Moon and move forward to Mars, the Veg-PONDS-02 experiment is currently underway aboard the International Space Station.

The present method of growing plants in space uses seed bags, referred to as pillows, that astronauts push water into with a syringe. Using this method makes it difficult to grow certain types of “pick and eat” crops beyond lettuce varieties. Crops like tomatoes use a large amount of water, and pillows don’t have enough holding capacity to support them.

NASA astronaut Christina Koch initiates the Veg-PONDS-02 experiment on the International Space Station within Veggie by filling the upper reservoir on April 25, 2019. Credits: NASA/David Saint-Jacques

NASA astronaut Christina Koch initiates the Veg-PONDS-02 experiment on the International Space Station within Veggie by filling the upper reservoir on April 25, 2019. Credits: NASA/David Saint-Jacques

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An Ocean Acidification Experiment

By Dr. Michael Chase – Re-Blogged From https://clisciwatch.wordpress.com

SCOPE

This article describes the method and PRELIMINARY outcome of a relatively low cost “laboratory” (kitchen) experiment on the response of seawater pH to increases in atmospheric CO2.

When additional CO2 is added to the air above seawater the chemistry of the water is expected to change, with much focus on the pH measure of acidity. I find that the change in pH when equilibrium is established is readily detectable on a low cost portable pH meter with 0.01 resolution, but the measured size of the effect appears to be significantly smaller than reported in the recent scientific literature. This article deals mostly with the experimental method and results.

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Harvard University Experiment to Block Sunlight, to Prevent Global Warming

By Eric Worrall – Re-Blogged From WUWT

Harvard University is planning to conduct an experiment to test the effectiveness of sunlight blocking aerosols dumped into the stratosphere.

Harvard Scientists Begin Experiment To Block Out The Sun

Dec 5, 2018, 12:40pm, Trevor Nace

A group of Harvard scientists plans to tackle climate change through geoengineering by blocking out the sun. The concept of artificially reflecting sunlight has been around for decades, yet this will be the first real attempt at controlling Earth’s temperature through solar engineering.

Sulphate Aerosol Geoengineering (same principle as the Harvard experiment). By HughhuntOwn work, CC BY-SA 3.0, Link
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