BTC is probably down due to the Bitmain debacle about hardforking on Aug 1 2017
https://blog.bitmain.com/en/uahf-contingency-plan-uasf-bip148/

ETH is probably down due to the whalepanda post
https://medium.com/@WhalePanda/i-was-wrong-about-ethereum-804c9a906d36

Pretty much everything else is probably being dragged down by the turmoil regarding BTC and ETH.
No worries, it'll recover in time.