The US Navy does not have the capacity to build the SSN(X) submarines at scale—but rather than acknowledging this, it has simply attempted to delay their completion dates.

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Learn how to build a simple solar cell at home using copper tape, plastic cups, and water. This step-by-step science experiment demonstrates how to harness solar energy to generate electricity.

I love this mobile because it’s very cute but not cutesy. The balloons and fun colors keep it infant-appropriate, while the construction and materials make it closer to a Calder than your standard ...