About.com - Environment.about.com

content-type: text/html; charset=iso-8859-1
location: https://www.thoughtco.com/environment-4133500
server: Apache/2.4.62 (Amazon Linux) OpenSSL/3.0.8
via: 1.1 varnish, 1.1 varnish
accept-ranges: bytes
age: 0
date: Tue, 13 May 2025 19:34:01 GMT
cache-control: max-age=3600
x-served-by: cache-iad-kjyo7100115-IAD, cache-chi-kigq8000028-CHI
x-cache: HIT, MISS
x-cache-hits: 80, 0
x-timer: S1747164842.601910,VS0,VE20
content-length: 253

HTTP/2 301 
strict-transport-security: max-age=15552000
x-abt-application-version: 5.32.0
x-content-type-options: nosniff
location: https://www.thoughtco.com/social-sciences-4133522?google_nofetch=true
referrer-policy: no-referrer-when-downgrade
via: 1.1 google, 1.1 varnish, 1.1 varnish
accept-ranges: bytes
nel: {"report_to":"network-errors","max_age":2592000,"success_fraction":0,"failure_fraction":1.0, "include_subdomains": true}
report-to: {"group":"network-errors","max_age":2592000,"endpoints":[{"url":"https://rjs.3gl.net/hawklogserver/561/re.p"}]}
date: Tue, 13 May 2025 19:34:01 GMT
x-served-by: cache-bfi-kbfi7400064-BFI, cache-bfi-kbfi7400064-BFI, cache-chi-klot8100163-CHI
x-cache: MISS, MISS
x-cache-hits: 0, 0
x-timer: S1747164842.645547,VS0,VE90
x-connection-protocol: HTTP/2
content-length: 0

HTTP/2 200 
referrer-policy: no-referrer-when-downgrade
x-abt-application-version: 5.32.0
expires: Thu, 01 Jan 1970 00:00:00 GMT
link: <//www.thoughtco.com/static/5.32.0/cache/eNqVVdt6pCAMfqHy-RC93ZeIEDUVyCzg7PTtl4MdsUPV3kgS_j8HiKHzAQLJzoANGjvpfZcs-Na9bpCBEcVNg8SJtULXAhl0pAhsR1bh44nIW0B2M7C5sUUbfAfKdxohOuwZnHrxuiHnmNmjfFuOyrbDAR1aiWIPNKwWjb4mOCAt7qSQc4JZOsL34NczkiJm_VMx9dZrEf9IjRjXCWmcwvsEdsQ_5ANadE1jK8youQcd4enY1qWFs3CnMRrZdn6mm9Bk501qMQZ2JvpPgUELj-Dk9E09CVSyEdFSiSecYdHaS4doM2-vnnB7F6NIt5je1_Ku91K1sWQfDi4m93dGjzScxJRsA8iQk63kE9bHYtYreEoH-ax3PDCHeMdlOeiFNu7Vbd0SLCneai4idfVTPWuljdfgHIYs6ZVLfoq_oqZT8zvlGl1xUOAnsVi6o_Nr_k1rq_xes5zTX-tYJLOOo6ZWriVx2qvt875x0GkwbNLvGaJUcJ0YwKo4j8UVD-vp5KV8j-ao_7uA-3ptSM6foliucvbgGoQyVRFHsIs7GvMvv1NarGRfcy-ETTwMEuDBls1nIe20S6_IENuG-pgYqCN89TaWWbbp_wFB2Px9.min.css>; rel=preload; as=style; nopush, <//www.thoughtco.com/static/5.32.0/fonts/Lato-900.woff2>; rel=preload; as=font; type="font/woff2"; crossorigin; nopush, <//www.thoughtco.com/static/5.32.0/fonts/Lato-900-Italic.woff2>; rel=preload; as=font; type="font/woff2"; crossorigin; nopush, <//www.googletagmanager.com/gtm.js?id=GTM-5P3SZGS>; rel=preload; as=script; nopush, <//www.googletagmanager.com/gtag/js?id=G-607QNCLEV4&l=dataLayer&cx=c>; rel=preload; as=script; nopush, <//securepubads.g.doubleclick.net/tag/js/gpt.js>; rel=preload; as=script; nopush, <//www.thoughtco.com/static/5.32.0/cache/eNp9UtFuwyAM_KGhfMM2TXuqVE35AQJO6oZAhE2q9usHUacknZMHEObOh3VcRawZTTVozw6qK1UctYG3antvwjAGD56pcvoeEhfmlZS5gOlfyddCetwJH5AZwbfYvVKelcOGtnT0DJHAMAYv6QZtwQqACaFHIAFJjA5ZxlqvjmAbhkO8WNWj7w5JE3gbYsWXGDhf7ciA0pZ2MXObBGzIB9VE0P0Ysm9Le8YitBDB597d2VZ_aii28ya9ou-NNPWoO1ATwu1At-Nh_hyHpld_bklaqaHULECwycGcjJ_6o6w9aNbMh68J1gasWNo-I6j0iNtKGOTzdJZFTsARDdXlPYgiJ82hVa0LIb6WUsP3uS5LgljHDrgki3QLDoklFpltaBYkQvYjQf3P8YXyPxarf8uyhdONLKu3EeiiGwfvln4BVxaZJw.min.js>; rel=preload; as=script; nopush; group=top, <//www.thoughtco.com/static/5.32.0/cache/eNqlUkFywyAM_FAZHtFrPyGDjFXLIkU4TfL6yjiTpo7Hl14Q2tldYIXXCpWCn0Aqo_9UP9nGnUGIGZyGkpnf_F9WyNMpC0pVT1KxCLCP2GNZ9G1TMB6I8LKK6IaOSUZddC_gvw2cXQVmru7EcyI58Buh4mVdf1k5zozNmeF2dXD0om-KCa0OSGmo7wNIwg_SimKh7IEPryeTxLmzJAeE2FRL2eP1uUzGXmyAnSKUMGzaPZnAmZKBWXw_M9toEcUZumkf2uXllqOFqfXoC0yQ2s9J1B_QIgHndC9tQFvyvWPqWupqzXjtqOrLTJ5s9WuG0o7X4DiH0a3IkaYDbYqe8UIdo832B_PAKao.min.js>; rel=preload; as=script; nopush; group=bottom
content-encoding: gzip
via: 1.1 google, 1.1 varnish, 1.1 varnish
content-security-policy: frame-ancestors 'self' *.specless.io *.specless.tech http://*.seo.aws.about.com https://*.seo.aws.about.com http://*.dotdash.com https://*.dotdash.com *.thoughtco.com
content-type: text/html;charset=utf-8
x-content-security-policy: frame-ancestors 'self' *.specless.io *.specless.tech http://*.seo.aws.about.com https://*.seo.aws.about.com http://*.dotdash.com https://*.dotdash.com *.thoughtco.com
cache-control: max-age=1800, private
set-cookie: TMog=n82fc73da6358440dbc5cb27f766cdfa919; Path=/; Domain=.thoughtco.com; Expires=Sun, 31 May 2093 22:48:08 GMT; Max-Age=2147483647; Secure
set-cookie: globalTI_SID=e47f1dab-acbe-4fc0-abbc-bcec41aeaa56; Path=/; Domain=.thoughtco.com; Expires=Thu, 13 May 2027 19:34:01 GMT; Max-Age=63072000; Secure
set-cookie: Mint=n82fc73da6358440dbc5cb27f766cdfa919; Path=/; Domain=.thoughtco.com; Expires=Tue, 13 May 2025 20:04:01 GMT; Max-Age=1800; Secure
set-cookie: pc=1; Path=/; Domain=.thoughtco.com; Expires=Tue, 13 May 2025 20:04:01 GMT; Max-Age=1800; Secure
strict-transport-security: max-age=15552000
x-content-type-options: nosniff
accept-ranges: bytes
nel: {"report_to":"network-errors","max_age":2592000,"success_fraction":0,"failure_fraction":1.0, "include_subdomains": true}
report-to: {"group":"network-errors","max_age":2592000,"endpoints":[{"url":"https://rjs.3gl.net/hawklogserver/561/re.p"}]}
date: Tue, 13 May 2025 19:34:01 GMT
x-served-by: cache-bfi-krnt7300076-BFI, cache-bfi-krnt7300076-BFI, cache-chi-klot8100163-CHI
x-cache: MISS, MISS
x-cache-hits: 0, 0
x-timer: S1747164842.738537,VS0,VE132
x-connection-protocol: HTTP/2