How To Uncompress The 1000 Genome Vcf.Gz File

Hello,
Can somebody tell me how to uncompress 1000 Genome vcf.gz files?
I am performing an RNA-editing analysis and would like to substract annotated SNPs/INDELs.
I have already done so using dbSNP data with bedtools instersect, but am still stuck with the 1000 Genome Project *.vcf.gz files.
I downloaded these for each chromosome and then concatenated them. These files are in a format that gunzip/gzip -d wont recognize.
I tried using this file unzipped in bedtools intersect but it wasn’t reconized.
Many thanks,