=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 301 Moved Permanently
Server: Varnish
Retry-After: 0
Location: https://www.scientificamerican.com/article/study-linking-genetically-modified-corn-to-cancer/
Content-Length: 0
Accept-Ranges: bytes
Date: Sun, 23 Sep 2018 05:52:57 GMT
Via: 1.1 varnish
Connection: close
X-Served-By: cache-sjc3649-SJC
X-Cache: HIT
X-Cache-Hits: 0
X-Timer: S1537681977.116225,VS0,VE0

HTTP/1.1 200 OK
Accept-Ranges: bytes
access-control-allow-origin: *
Age: 1706
content-language: en-US
Content-Type: text/html; charset=utf-8
Server: nginx
Strict-Transport-Security: max-age=31536000
X-Backend: default
X-Content-Type-Options: nosniff
X-Varnish-Cache: HIT
X-XSS-Protection: 1; mode=block
Accept-Ranges: bytes
Age: 0
Accept-Ranges: bytes
Via: 1.1 varnish
Age: 1706
Accept-Ranges: bytes
Age: 0
Transfer-Encoding: chunked
Accept-Ranges: bytes
Date: Sun, 23 Sep 2018 05:52:57 GMT
Via: 1.1 varnish
Age: 1706
Connection: close
X-Served-By: cache-jfk8140-JFK, cache-sjc3624-SJC
X-Cache: MISS, MISS
X-Cache-Hits: 0, 0
X-Timer: S1537681977.252184,VS0,VE277
Vary: Accept-Encoding

Request headers
================
HEAD /article/study-linking-genetically-modified-corn-to-cancer/ HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: www.scientificamerican.com
Accept: */*
Referer: http://sothisisfitness.com
Connection: close


Link is valid.