Is it possible to have a modified Proof of Work that does not require as much energy to secure the blockchain?

As more ASICs hash away for acceptable difficulty, the difficulty keeps rising over time. Greater difficulty means to me that more electricity is used to secure the Bitcoin blockchain. Are there clever ways to modify Proof of Work, continue to use existing ASICs, spread block extraction to more miners, and continue to secure the blockchain…

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Unresolved dependencies: com.android.support.constraint:constraint-layout:1.0.1

I downloaded Android Studio for the first time and encountered a problem: dependencies { compile fileTree(dir: ‘libs’, include: [‘*.jar’]) androidTestCompile(‘com.android.support.test.espresso:espresso-core:2.2.2’, { exclude group: ‘com.android.support’, module: ‘support-annotations’ }) compile ‘com.android.support:appcompat-v7:25.3.1’ compile ‘com.android.support.constraint:constraint-layout:1.0.1’ testCompile ‘junit:junit:4.12’ On a another dock appeared: ERROR: Failed to resolve: com.android.support.constraint:constraint-layout:1.0.1 Show in Project Structure dialog Affected Modules: app Where and how can…

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