In 1989, Kentucky engineers built a 750-foot road base using about 80 tons of ponded fly ash; the 11% ash section was reported to perform well against the conventional controlAn experimental road base in Kentucky utilized coal plant residue in 1988. Fly ash has been a federal construction material since the 1970s...
04 Sep, 2026, 01.10 PM IST
In 2002, San Francisco pledged to reach zero waste by 2020. 18 years later, it fell short but still diverted 80% of waste from landfills and recycled 600 tonnes each daySan Francisco pursued ambitious waste reduction goals, aiming for zero waste by 2020. Mandatory recycling and composting ordinances were en...
03 Sep, 2026, 06.03 PM IST
In 2014, Royal Society of Chemistry scientists extracted D-limonene from waste orange peels at 96% purity, turning citrus processing waste into bio-based asphalt modifiersCitrus waste, previously considered rubbish, is now transformed into a valuable resource. D-limonene, derived from orange peels, is emergin...
03 Sep, 2026, 04.00 PM IST
In 2026, Texas engineers mixed 4.5 tons of waste plastic into nearly a mile of road; the recycled material replaced 8% to 10% of petroleum-based bitumenInnovative researchers are pioneering the use of recycled plastic to improve the durability of asphalt roads. By substituting a portion of ...
03 Sep, 2026, 02.28 PM IST
In 2011, ICE Chicago relied on 1 recycling bin for 200 workers; a hybrid system of 4 centers and desk boxes raised recycling to 38% and participation to 85%The U.S. Immigration and Customs Enforcement Chicago Field Office enhanced its recycling program. They established four recycling centers a...
03 Sep, 2026, 12.50 AM IST
In 2011, Naval Station Great Lakes added composting and recycling bins. 3 years later, the Navy had diverted 300 tons of food and yard waste and recycled 114% more wasteNaval Station Great Lakes enhanced waste management after joining the Federal Green Challenge. The station increased recycling by 114 perce...
02 Sep, 2026, 06.16 PM IST
In 2022, Hawaii used 195,000 plastic bottles to rebuild a road. Engineers found an alternative use for recycling plastic waste, but there's a catchHawaii's officials have embarked on an innovative experiment to blend recycled plastic into road asphalt, effectively repurposing nearly 20...
02 Sep, 2026, 03.22 PM IST
In 2012, Chicago’s Railroad Retirement Board found new life for 3,200 pounds of electronics through reuse and recycling; the effort lifted waste diversion nearly 10%The U.S. Railroad Retirement Board successfully recycled over 3,200 pounds of electronic waste. This achievement was driven by federal prog...
01 Sep, 2026, 10.30 PM IST
In 1991, Curitiba began exchanging recyclables for bus tokens and food. 35 years later, the city recycles 70% of its waste while creating jobs and supporting familiesIn Curitiba, Brazil, residents can exchange recyclable waste for fresh food. Other cities have found different uses for what people throw a...
01 Sep, 2026, 08.19 PM IST
In 1993, Taiwan collected 70% of its trash while recycling virtually none. 33 years later, paid bags, musical trucks and sorting helped drive recycling to 55% nationwideTaiwan’s experience therefore challenges the idea that recycling depends mainly on individual environmental enthusiasm. People certainly ne...
01 Sep, 2026, 04.13 AM IST
Two Canadian builders turned 612,000 plastic bottles into 2,000-sq-ft home in Nova Scotia; its panels were so strong they withstood sustained winds of 326 mph, twice the strength of Category 5 hurricaneCanadian builders transformed more than 600,000 plastic bottles into a house. The recycled PET was processed into foam and used to make str...
31 Aug, 2026, 05.05 PM IST
32,600 used tires did not go to a landfill. Instead, Michigan turned them into a 1.15-mile road in Clare County that can also reduce traffic noise. The next target is Detroit roadsMichigan is turning discarded tires into road-building material, with 32,600 passenger tire equivalents reused on a 1.15-mile stretch of Ha...
31 Aug, 2026, 03.59 PM IST
In 2021, RMIT tested shredded face masks with recycled concrete for road bases; 1 kilometer could use 3 million masks and divert 93 tonnes from landfillEngineers from Australia have introduced an innovative strategy for converting used face masks into construction materials for roads. This ...
28 Aug, 2026, 01.50 PM IST
Scientists tested reflective pavement through an Australian summer, and the road surface stayed cooler, but midday radiant heat increased above itA western Sydney trial revealed reflective roads cool surfaces but raise pedestrian temperatures. This study tracked the trade-off over a y...
27 Aug, 2026, 01.10 PM IST
Phoenix coated 36 miles of black asphalt with reflective coating to fight extreme heat. Road temperature dropped by 12°F, but pedestrians found a surprising side effectTo tackle the oppressive heat, Phoenix pioneered the use of lighter-toned roads, which successfully reduced surface temperatures significan...
26 Aug, 2026, 06.26 PM IST
Americans discard about 15 million tons of asphalt roof shingles a year, but old roofs can be ground up and put straight back into the roads people drive onMillions of tons of asphalt shingles are disposed of annually in the United States. These old roofing materials can be processed into recyc...
25 Aug, 2026, 01.20 PM IST
Philadelphia painted black pavement with a light-coloured coating to fight extreme heat. A year later, researchers found one clear differenceTo tackle urban heat island effects, Philadelphia is trialing cool pavement solutions. In Hunting Park, a reflective light-colored coating ...
24 Aug, 2026, 08.45 PM IST