Modern Marvels is going big, and counting down. We take the "best of" Modern Marvels and give you the MEGA Top 10 countdown. On this edition: Speed. It's a pure adrenaline rush as we race the top 10 fastest marvels we've featured down to the speediest of all.

Modern Marvels is going big, and counting down. We take the "best of" Modern Marvels and give you the MEGA Top 10 countdown. On this edition: Amazing Weapons. They're every arsenal's best asset and every enemy's worst nightmare and we're counting them down to the most amazing weapon of all.

Modern Marvels is going big, and counting down. We take the "best of" Modern Marvels and give you the MEGA Top 10 countdown. On this edition, the top ten guilty pleasures you just can't resist… America's Favorite Foods.

The only thing harder than resisting our favorite snacks is ranking them. But this special episode of Modern Marvels counts down the top ten lip-smacking treats Americans love most. We raid the pantry–and our rich archives–showcasing the indulgently decadent, the heart-healthy, and the wildly delicious spectrum of grab-and-go delights in between. It's a nationwide culinary journey leading to our number 1 choice–a snack so irresistible that Americans consume almost half the world's supply.

America has always prided itself on its technological strength–and this countdown embarks on an odyssey featuring the strongest of the strong. Whether they lift, pull, hold or haul, every heavy-duty titan among our top ten choices has the muscle to reshape our world. Our contenders take our cameras on land, sea and air as they push the limits of power and endurance beyond the imaginable. And our choice at number 1 pulses with so much strength it could destroy our other nine finalists with one push of a button.

The variety of jobs in America is endless–but some have to be seen to be believed. Our countdown of the top ten most fascinating jobs from our archives proves how daring and innovative the American worker can be. A nationwide quest finds amazing jobholders in the wild blue yonder and the depths of a secret underworld…in occupations ranging from the daffy to the dangerous to the downright creepy. And at the end of our journey, we find two business partners performing a job so perilous that one misstep can be deadly.

This countdown special kisses the conventional goodbye, raiding the Modern Marvels archives for the most bizarre wonders we've ever presented. Our top ten contenders demonstrate that the inside scoop on innovation often lies outside the norm. You'll be scratching your head at the weird assortment of oddities–technologies ranging from a gooey slime that could be a terrorist's worst nightmare…to an exacting art form requiring the help of millions of ravenous beetles. The final destination at number 1: a devise so strange and destructive that its inventor allegedly destroyed it to avert a catastrophe.

For this countdown special, we're buckling up and punching it–as we raid the Modern Marvels archives for the hottest rides we've ever presented. From the retro to the rugged to the reckless, our top ten picks showcase our love affair with vehicles that blow back our hair or quicken our pulses. Our only limitation: they've got to stay earthbound–so no sea or aircraft. Other than that, anything goes…from one of Jay Leno's vintage autos to a sleek battery-driven roadster to a motorcycle you've got to see to believe. Our number 1 choice: a ride so hot that one passionate owner applied for a license to marry it.

This countdown special goes gaga over gizmos–celebrating the most amazing gadgets Modern Marvels has ever featured. Our top ten contenders run the gamut from the indispensable to the insane…from golden oldies to newfangled novelties…all of them showcasing the wonder of human ingenuity. We'll unveil the secrets inside one of the 1960s' most iconic thingamajigs, reveal why an electronic doodad from the '90s was once considered a threat to national security, and rediscover the forgotten marvel created by Benjamin Franklin. Our number 1 pick: a household gadget reinvented so many times that it's inspired more than 4,500 unique patents.

The Panama Canal is considered the 7th wonder of the modern world. But today, it is too small. Now in order to fit the worlds’ growing fleet of super ships, the Panama Canal is getting a complete overhaul. This all-new, one-hour Modern Marvels takes us inside the billion dollar Panama Canal Expansion Project. With unprecedented access, this program features exclusive footage of the building of the new canal and shows us what it takes to complete one of the greatest construction projects in history. From massive explosions at the excavation site to eighteen hour concrete pours at the lock walls... from the assembly of the largest locks gates in the world to their transport on the backs of semi-submersible ships across the Atlantic... With the help of visually stunning photography and ample use of drone and time-lapse cameras, we'll follow the building of a modernized Panama Canal and capture the impressive scale and pace of this undertaking.