The evidence that the dodo bird (Raphus Cucullatus), extinct since 1681, could be alive is not quite as solid but still interesting. A night vision video recently uploaded to the Internet shows what appears to be a live dodo walking past an iguana.
Interestingly, hard-boiled eggs do not keep nearly as long as raw eggs, which can last three to five weeks in the refrigerator. There is a good reason for this. When a hen lays an egg, it puts a naturally protective coating on the outside of the shell.
Generally, hard-boiled eggs can last a week in the refrigerator. Even with its natural (but easily cracked) calcium-carbonate container, a hard-cooked egg is a perishable food, so it shouldn't be kept at room temperature for more than two hours.