What on Earth?

The series started out OK but has since degenerated into Enquirer-level sensationalism. The show has likely run out of ideas and is now willing to present known and already-explained phenomena as unsolved mysteries.

An example: satellite photos and video show an enormous 3,000-mile wide shadow moving across the planet! What on earth could it be?!?

1. Is it secret gov't technology deployed into space to cool a too-warm earth? Evidently, according to our scientists, we don't have the capability to do it or keep it secret.

2. All right, how about a huge insect swarm? The largest swarm ever documented covered about 75 square miles. But this shadow is way bigger and moving at 2,000 miles per hour! Can insects fly that fast? Who knows. Let's check with our scientists!

3. OK, insects are out. So what if the shadow was caused a huge alien ship like the one in Independence Day? And the gov't is covering it up? Let's ask our scientists if its possible to hide an alien spacecraft the size of Australia.

4. Ok, alien ships are out, at least for now 'cuz we ain't entirely convinced. But what else could have caused this shadow?

We're outta ideas so how can we figure this out? Should we consult NASA since they provided the satellite data? They can't be much smarter than our own scientists, but fine, we'll ask 'em during the commercial break ... and, we're back and, OMG, NASA claims the shadow was caused by ... THE MOON? Are they sure? Could this be another cover-up? And NASA "claims" lunar eclipses are 100% predictable? Well, maybe we'll figure all this out someday but for now ... ITS A MYSTERY!

Coming up next: Crop circles!

Everyone above this comment hit the nail on the head. This is a waste of time to anyone truly interested in science. The ridiculous argument before explaining what is obvious to a lot of learned people is really insulting. I was watching another show called NASA's Unexplained Files and the premise was as ridiculous as the one for What on earth, checked out the production company... guess what?? same guy... When I'm looking on the program guide and see these two programs I feel sad because the channels that are normally watch for science stories and interesting stuff are busy showing this garbage. I guess it's a cheap show and that's why they use it, I don't know. Here's is to missing The Learning Channel 20 years ago when it started (The Operation anyone? that was so cool!!). I guess everything gets lowered to the minimum common denominator or whatever sells to the masses... really sad.

I think all the "scientists" are hired actors. Used to be 1 of my favourite series in Discovery Science, but at 1 point when I realised that the "experts" are contradicting themselves (1st they present a theory, then another, then eventually the very same "expert" is the 1 who explains the real cause of the said phenomenon) that is when I thought that these are all staged.

This is a show based on satellite imagery uncovering mysteries. This could have been a wonderful idea, but it was horribly done.

The "science" behind the stories is just ludicrous. Every random mark on the earth is Noah's ark, Garden of Eden, Atlantis,aliens, etc. Then they pretend to use science akin to "all dogs are animals therefore fish ride bicycles ... OBVIOUSLY!" to "prove" their ludicrous hyperbole, ridiculous conjecture, fables and guesses, stir in a bit more sensationalism, eerie music and well-placed commercial breaks for suspense (followed by a 5 minute reminder of the last 5 minutes before the commercial break) ... then eventually state what it REALLY is or claim it's still a mystery *David Copperfield hands*.

This show is an embarrassing travesty of science. This should be on the History Channel.

Not sure if they are filming this in a library or something, but Mike Caps for example, whispers the entire show. Every single statement from him. Whisper. He's not the only one. Nearly every single "expert" does it. Annoying.