| Many end with '-ase' | 28 |
| Agents of biochemical change | 28 |
| Epoch of the Tertiary Period | 28 |
| Epoch in which mammals arose | 28 |
| Epoch in the Tertiary Period | 28 |
| Ancestor of the modern horse | 28 |
| Astronomer's time period | 28 |
| Long, long, long time period | 28 |
| It may seem like an eternity | 28 |
| Forever and a day, seemingly | 28 |
| A gazillion years, seemingly | 28 |
| What a waiting time may seem | 28 |
| Two or more eras, in geology | 28 |
| Phanerozoic or Archean, e.g. | 28 |
| One billion years to Hubble | 28 |
| It keeps going and going ... | 28 |
| Incalculable amounts of time | 28 |
| Mythical goddess of the dawn | 28 |
| Volkswagen coupe convertible | 28 |
| Thea's daughter, in myth | 28 |
| Agcy. that polices polluters | 28 |
| Air quality overseer (Abbr.) | 28 |
| Org. with an Office of Water | 28 |
| Toxic-level monitor, briefly | 28 |
| Fuel efficiency rater: Abbr. | 28 |
| Air quality watchdogs: abbr. | 28 |
| They got the lead out: abbr. | 28 |
| Org. whose seal has a flower | 28 |
| Org. that controls emissions | 28 |
| Org. doing atmospheric tests | 28 |
| Org. concerned with fracking | 28 |
| Environmental watchdog agcy. | 28 |
| Ecology-oriented govt. group | 28 |
| Uniform's shoulder piece | 28 |
| Military shoulder decoration | 28 |
| Disney World's __ Center | 28 |
| Walt Disney World attraction | 28 |
| Walt Disney World theme park | 28 |
| Fencer's harmless weapon | 28 |
| What one carries for parries | 28 |
| Sport with automated scoring | 28 |
| Sport played to three points | 28 |
| Sport fought to three points | 28 |
| Safer alternative to a saber | 28 |
| It's thrust at Olympians | 28 |
| It's heavier than a foil | 28 |
| It'll keep you en garde? | 28 |
| It has about a 35-inch blade | 28 |
| French for "sword" | 28 |
| Electrified weapon, at times | 28 |
| Electrified sports equipment | 28 |
| Descendant of the smallsword | 28 |
| Alternative to a singlestick | 28 |
| A masked competitor waves it | 28 |
| "Touché" weapon | 28 |
| "Sword," in French | 28 |
| They're rather pointless | 28 |
| They often have pistol grips | 28 |
| Modern sport fencing weapons | 28 |
| Modern pentathletes use them | 28 |
| Equipment for some Olympians | 28 |
| Book after Galatians (abbr.) | 28 |
| N.T. book attributed to Paul | 28 |
| FDA-banned herbal supplement | 28 |
| Prefix with center or dermis | 28 |
| Prefix with graph or glottis | 28 |
| Prefix with center or dermal | 28 |
| One of Vanuatu's islands | 28 |
| Lead-in to Pen, commercially | 28 |
| Anesthesia option, for short | 28 |
| "Beowulf," for one | 28 |
| "Odyssey," for one | 28 |
| "Ben-Hur," for one | 28 |
| Sword-and-sandal flick, e.g. | 28 |
| Augustana's record label | 28 |
| "Beowulf," notably | 28 |
| The "Iliad" is one | 28 |
| The "Aeneid," e.g. | 28 |
| Many a Cecil B. DeMille film | 28 |
| Faith No More's only hit | 28 |
| "Ulysses," for one | 28 |
| "Beowulf", for one | 28 |
| "Ben-Hur", for one | 28 |
| "___ of Gilgamesh" | 28 |
| 'Iliad' and the like | 28 |
| Writing at the end of a work | 28 |
| Anglican's cousin: Abbr. | 28 |
| Letters in the New Testament | 28 |
| Phrase on the back of a buck | 28 |
| Noteworthy period of history | 28 |
| Moment in time, in astronomy | 28 |
| Â Â Historical periods | 28 |
| It has long and short verses | 28 |
| General Shrapnel or Burnside | 28 |
| Poem telling of heroic deeds | 28 |
| Silas Marner's foundling | 28 |
| "House" actor Omar | 28 |
| Omar of "Scream 2" | 28 |
| "Alfie" actor Omar | 28 |
| They're shorter than LPs | 28 |