Ten new glassblowers impress the judges - including the season 1 champion - with pieces that tell the story of their evolution as artists.

Each artist designs a set of six glasses for a different beverage, including fancy flutes for champagne and curvaceous chalices for Belgian ale. Cheers y'all.

To celebrate the Year of Glass, the contestants create pieces inspired by groundbreaking glass inventions, from Galileo's telescope to smartphones.

The seven glassblowers take on the Seven Deadly Sins, yielding a menacing lustful rose, a vibrant ode to gluttony and a piece that's green with envy.

Go big or go home. As their numbers dwindle, the artists turn tiny objects into supersized sculptures - including and olive, a thimble, and a pushpin..

The hot shop meets the big top in a circus-themed challenge filled with whimsical creatures, from a bearded dragon lady to a dapper walrus.

The glassblowers split up into pairs. One team collaborates on a troll-like "tree baby" while the other forges flames and fiery chili peppers.

Planets collide and aliens give birth as the artists conquer the final frontier: crafting dynamic sculptures that capture the majesty of outer space.

In an emotional challenge, the three remaining glassblowers create pieces that represent their greatest fears - and try out some risky techniques.

In an intense eight-hour challenge, the final two artists create two very different installations. Both wow the judges, but only one can be the winner.