We have the April 2019 Groovy Lab In a Box theme spoilers.
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The theme is UNDER PRESSURE!
Under Pressure:A Lesson in Habitats Engineering Design Challenge : Is that a storm brewing ahead? You can find out with your “Under Pressure” Groovy Lab in a Box! Using only the materials from your box, build a working weather station that allows you to measure humidity, rainfall, wind speed and direction, and atmospheric pressure?
Here’s a sneak peek: