Related by context. Frequent words. (Click for all words.) 43 debris 40 By DUSTIN BLEIZEFFER 39 energy 39 rotating 37 sprayed foam 36 hydraulic motors 36 Debris 34 biomass geothermal 34 meteoroid 34 coolant temperature 34 rotor 34 photovoltaic PV panels 34 pebble sized 34 debris littered 33 pulverized concrete 33 impeller 33 converts sunlight 33 hydro biomass 33 electrical 33 uprighted 32 Ceiling tiles 32 physicist Steven Chu 32 spokesman Viktor Beltsov 32 solar 32 Propane tanks 31 tree limbs 31 Andris Piebalgs 31 algae biomass 31 metal shavings 31 electromagnet 31 pyroclastic flow 31 compact fluorescent lighting 31 efficient lightbulbs 31 flames billowing 31 twisted metal 31 heating 31 flaming debris 30 rotates 30 blackened wreckage 30 dust particles 30 centrifugal force 30 Firefighters doused 30 David Sandalow 30 wind 30 electromagnets 30 vegetative debris 30 hydrogen 30 airfoils 30 kinetic energy 30 counterclockwise direction 30 photovoltaic solar panels 30 meteoroids 30 orbital debris 29 metal sheeting 29 absorbent material 29 fuel 29 Shattered glass 29 solar panels wind turbines 29 servomotors 29 mangled mess 29 hydraulically operated 29 Martian dust 29 pad #A 29 charred skeletons 29 Debris littered 29 rain gutters 29 door jambs 29 spins 29 BTUs 29 efficiency 29 greenhouse gas emitting 29 mudflows 29 beam splitter 29 Tree limbs 29 ElectraTherm 29 Smoke billowed 29 micrometeorites 28 hydro geothermal 28 watt light bulb 28 metal shards 28 photovoltaic arrays 28 renewable energies 28 whirls 28 Rotating 28 refining petrochemicals 28 crews 28 dousing flames 28 Garbage cans 28 fuels 28 workpieces 28 tornado flattened 28 polluting fossil fuels 28 clogged gutters 28 shuttle underside 28 commissioner Andris Piebalgs 28 flyaway foam 28 plume 28 desalinization plants 28 backhoe operator 28 decarbonising 27 debris littering