April Fool's Day is over, so it's safe to believe in what you read on the Internet again. Well, most of it, anyway. While some parts of the Web hosted hoaxes all day, there was also a fair share of real news. Here is just a sampling of what you might have missed.

Newspaper delivery drones aren't real but we wish they were [SF Gate]

In the saddest bit of April Fool's hoaxes, we can confirm that we won't be getting our mail delivered to us via remote-controlled flying drones. We had hoped it was true; after all, we've seenquadrocopters deliver tacos and drones airdrop burritos.

The speed of light may not be fixed [Popular Science]

Even if you're not a physics professor, it's pretty much common knowledge that the speed of light in vacuum is 299,792,458 meters per second (186,282 miles per second). But two recently published papers say that the photons traveling in vacuum actually fluctuate in speed by 50 quintillionths of a second per square meter. The scientists believe this change in "constant speed" occurs because of short-lived particles that appear in the vacuum of space.

Art project turns NYC payphones into time machines [Recalling 1993]

When was the last time you used a pay phone? Recalling 1993 might give you an excuse to use one again. Dial a specific phone number from any pay phone in Manhattan and you'll get transported back to a time when we didn't all carry mini computers in our pockets. Then once you're done, stop and ponder the fact that 1993 was 20 years ago. [via Broke-Ass Stuart]

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