!!!Did you know this about United States? Did you know that United States is among the top 10 of the 193 UN countries in the following 48 respects. #Airports: 13,513 (Rank 1). #Heliports: 5,287 (Rank 1). #Railways - km: 224,792 (Rank 1). #Roadways - km: 6,586,610 (Rank 1). #Airports - with paved runways: 5,054 (Rank 1). #Airports - with unpaved runways: 8,459 (Rank 1). #Electricity - imports - KWh: 59,260,000,000 (Rank 1). #Crude oil - imports - bbl/day: 9,213,000 (Rank 1). #Refined petroleum products - production - bbl/day: 18,450,000 (Rank 1). #Refined petroleum products - consumption - bbl/day: 18,840,000 (Rank 1). #Refined petroleum products - imports - bbl/day: 2,580,000 (Rank 1). #Natural gas - production - cu m: 681,400,000,000 (Rank 1). #Natural gas - consumption - cu m: 689,900,000,000 (Rank 1). #Imports - $: 2,273,000,000,000 (Rank 1). #GDP (purchasing power parity) - $: 16,720,000,000,000 (Rank 1). #GDP (official exchange rate) - $: 16,720,000,000,000 (Rank 1). #Internet hosts: 505,000,000 (Rank 1). #Nobel Prize Winners - : 254.0 (Rank 1). #Electricity - production - KWh: 4,099,000,000,000 (Rank 2). #Electricity - consumption - KWh: 3,886,000,000,000 (Rank 2). #Electricity - installed generating capacity - KW: 1,039,000,000 (Rank 2). #Crude oil - production - cu m: 11,110,000 (Rank 2). #Refined petroleum products - exports - bbl/day: 2,311,000 (Rank 2). #Natural gas - imports - cu m: 88,770,000,000 (Rank 2). #Carbon dioxide emissions from consumption of energy - MT: 5,491,000,000 (Rank 2). #Exports - $: 1,575,000,000,000 (Rank 2). #Internet users: 245,000,000 (Rank 2). #Telephones - main lines in use: 139,000,000 (Rank 2). #Total Area - sq km: 9,826,675 (Rank 3). #Land Area - sq km: 9,161,966 (Rank 3). #Water Area - sq km: 664,709 (Rank 3). #Irrigated Land - sq km: 266,440 (Rank 3). #Total renewable water resources - cu km: 3,069 (Rank 3). #Freshwater withdrawal - cu km/yr: 478.4 (Rank 3). #Health expenditures - % of GDP: 17.9 (Rank 3). #Population: 318,892,103 (Rank 3). #Telephones - mobile cellular: 310,000,000 (Rank 3). #Waterways - km: 41,009 (Rank 5). #Natural gas - proved reserves - cu m: 9,459,000,000,000 (Rank 5). #Land boundaries - km: 12,034 (Rank 6). #Natural gas - exports - cu m: 45,840,000,000 (Rank 7). #Coastline - km: 19,924 (Rank 8). #Freshwater withdrawal per capita - cu km/yr: 1,583 (Rank 8). #GDP per capita: 52,800 (Rank 9). #Electricity - production per capita - KWh: 12,854 (Rank 9). #Lowest Point - meter: -86.0 (Rank 10). #Electricity - consumption per capita - KWh: 12,186 (Rank 10). #Refined petroleum products - production per capita - bbl/day: 0.06 (Rank 10).