"Launched by hand – like a blow gun. But once the b-dart is in the air it follows its target forever. The initial thrust has to be provided." Potter laughed. "I supply that. A big puff of air."

"Interesting." Trent returned the rod. With elaborate casualness, studying the two blue-gray faces, he asked, "I'm the first human you've seen?"

"That's right," Jackson said. "The Old Man will be pleased to welcome you." There was eagerness in his reedy voice. "What do you say? We'll take care of you. Feed you, bring you cold plants and animals. For a week, maybe?"

"Sorry," Trent said. "Other business. If I come through here on the way back…"

The horny faces fell with disappointment. "Not for a little while? Overnight? We'll pump you plenty of cold food. We have a fine cooler the Old Man fixed up."

Trent tapped his tank. "Short on oxygen. You don't have a compressor?"

"No. We don't have any use. But maybe the Old Man could -"

"Sorry." Trent moved off. "Have to keep going. You're sure there are no humans in this region?"

"We thought there weren't any left anywhere. A rumor once in a while. But you're the first we've seen." Potter pointed west. "There's a tribe of rollers off that way." He pointed vaguely south. "A couple of tribes of bugs."

"And some runners."

"You've seen them?"

"I came that way."

"And north there's some of the underground ones – the blind digging kind." Potter made a face. "I can't see them and their bores and scoops. But what the hell." He grinned. "Everybody has his own way."

"And to the east," Jackson added, "where the ocean begins, there's a lot of the porpoise kind – the undersea type. They swim around – use those big underwater air-domes and tanks – come up sometimes at night. A lot of types come out at night. We're still daylight-oriented." He rubbed his horny blue-gray skin. "This cuts radiation fine."

"I know," Trent said. "So long."

"Good luck." They watched him go, heavy-lidded eyes still big with astonishment, as the human being pushed slowly off through the lush green jungle, his metal and plastic suit glinting faintly in the afternoon sun.

Earth was alive, thriving with activity. Plants and animals and insects in boundless confusion. Night forms, day forms, land and water types, incredible kinds and numbers that had never been catalogued, probably never would be.

By the end of the War every surface inch was radioactive. A whole planet sprayed and bombarded by hard radiation. All life subjected to beta and gamma rays. Most life died – but not all. Hard radiation brought mutation – at all levels, insects, plant and animal. The normal mutation and selection process was accelerated millions of years in seconds.

These altered progeny littered the Earth. A crawling teeming glowing horde of radiation-saturated beings. In this world, only those forms which could use hot soil and breathe particle-laden air survived. Insects and animals and men who could live in a world with a surface so alive that it glowed at night.

Trent considered this moodily, as he made his way through the steaming jungle, expertly burning creepers and vines with his blaster. Most of the oceans had been vaporized. Water descended still, drenching the land with torrents of hot moisture. This jungle was wet – wet and hot and full of life. Around him creatures scuttled and rustled. He held his blaster tight and pushed on.

The sun was setting. It was getting to be night. A range of ragged hills jutted ahead in the violet gloom. The sunset was going to be beautiful – compounded of particles in suspension, particles that still drifted from the initial blast, centuries ago.

He stopped for a moment to watch. He had come a long way. He was tired – and discouraged.

The horny blue-skinned giants were a typical mutant tribe. Toads, they were called. Because of their skin – like desert horned-toads. With their radical internal organs, geared to hot plants and air, they lived easily in a world where he survived only in a lead-lined suit, polarized viewplate, oxygen tank, special cold food pellets grown underground in the Mine.

The Mine – time to call again. Trent lifted his transmitter. "Trent checking again," he muttered. He licked his dry lips. He was hungry and thirsty. Maybe he could find some relatively cool spot, free of radiation. Take off his suit for a quarter of an hour and wash himself. Get the sweat and grime off.

Two weeks he had been walking, cooped up in a hot sticky lead-lined suit, like a diver's suit. While all around him countless life-forms scrambled and leaped, unbothered by the lethal pools of radiation.

"Mine," the faint tinny voice answered.

"I'm about washed up for today. I'm stopping to rest and eat. No more until tomorrow."

"No luck?" Heavy disappointment.

"None."

Silence. Then, "Well, maybe tomorrow."

"Maybe. Met a tribe of toads. Nice young bucks, eight feet high." Trent's voice was bitter. "Wandering around with nothing on but shirts and pants. Bare feet."

The Mine Monitor was uninterested. "I know. The lucky stiffs. Well, get some sleep and raise me tomorrow am. A report came in from Lawrence."

"Where is he?"

"Due west. Near Ohio. Making good progress."

"Any results?"

"Tribes of rollers, bugs and the digging kind that come up at night – the blind white things."

"Worms."

"Yes, worms. Nothing else. When will you report again?"

"Tomorrow," Trent said. He cut the switch and dropped his transmitter to his belt.

Tomorrow. He peered into the gathering gloom at the distant range of hills. Five years. And always – tomorrow. He was the last of a great procession of men to be sent out. Lugging precious oxygen tanks and food pellets and a blast pistol. Exhausting their last stores in a useless sortie into the jungles.

Tomorrow? Some tomorrow, not far off, there wouldn't be any more oxygen tanks and food pellets. The compressors and pumps would have stopped completely. Broken down for good. The Mine would be dead and silent. Unless they made contact pretty damn soon.

He squatted down and began to pass his counter over the surface, looking for a cool spot to undress. He passed out.

"Look at him," a faint faraway voice said.

Consciousness returned with a rush. Trent pulled himself violently awake, groping for his blaster. It was morning. Gray sunlight filtered down through the trees. Around him shapes moved.

The blaster… gone!

Trent sat up, fully awake. The shapes were vaguely human – but not very. Bugs.

"Where's my gun?" Trent demanded.

"Take it easy." A bug advanced, the others behind. It was chilly. Trent shivered. He got awkwardly to his feet as the bugs formed a circle around him. "We'll give it back."

"Let's have it now." He was stiff and cold. He snapped his helmet in place and tightened his belt. He was shivering, shaking all over. The leaves and vines dripped wet slimy drops. The ground was soft underfoot.

The bugs conferred. There were ten or twelve of them. Strange creatures, more like insects than men. They were shelled – thick shiny chitin. Multi-lensed eyes. Nervous, vibrating antennae by which they detected radiation.

Their protection wasn't perfect. A strong dose and they were finished. They survived by detection and avoidance and partial immunity. Their food was taken indirectly, first digested by smaller warm-blooded animals and then taken as fecal matter, minus radioactive particles.

"You're a human," a bug said. Its voice was shrill and metallic. The bugs were asexual – these, at least. Two other types existed, male drones and a Mother. These were neuter warriors, armed with pistols and foliage axes.

"That's right," Trent said.

"What are you doing here? Are there more of you?"

"Quite a few."

The bugs conferred again, antennae waving wildly. Trent waited. The jungle was stirring into life. He watched a gelatin-like mass flow up the side of a tree and into the branches, a half-digested mammal visible within. Some drab day moths fluttered past. The leaves stirred as underground creatures burrowed silently away from the light.